Numbers /28

How rare is 28?

28 scores 801 and sits in the Singular tier — 1 in 5,181 of all supported numbers score this high or higher. Everything below is computed from a complete analysis of all 1,000,001 numbers in range.

Number
28
Singular
Rarity Score
801
Global Percentile
Top 0.02%
Traits Detected
5

RNGdle.net’s own rarity score. Top 0.02% means that proportion of supported numbers scores at least this high. Every exact number has the same chance of being rolled. How this differs from EP · Badge guide

Number DNA
28
Lab Observations · Descriptive Only
2 digitsEven numberZero-freeFirst < last2, 8 appear once

These notes make the number easy to read, but they add no score unless a separately counted rarity signal appears below.

Digit Profile
Length2 digits
Unique digits2
Digit sum10
Odd / even split0 / 2
Digital root1
Mathematical Properties
Composite number
6 divisors
Not a perfect square
Not a perfect cube
Not a palindrome
Rarity Drivers
5 traits detected
Two-digit numberSingular

One of only 90 two-digit numbers in range.

Range · signal frequency

+269
1 in 11,111
Triangular numberExtreme

A sum 1 + 2 + … + k for some k.

Factorization · signal frequency

+189
1 in 707
Digit sum 10Extreme

This number's digits add up to an uncommon total.

Arithmetic · signal frequency

+168
1 in 334
2 distinct digitsExtreme

This number uses an uncommon count of distinct digits.

Repetition · signal frequency

+155
1 in 217
Happy numberDistinct

Iterating the sum of squared digits reaches 1.

Arithmetic · signal frequency

+20
14.31%
Rarity Explanation

Strongest signal: Two-digit number. It appears in 90 supported numbers and contributes +269 after correlation decay.

Why is 28 unusual? Only 0.02% of the 1,000,001 supported numbers receive an equal or higher rarity score. This number falls in the Singular tier. Scoring is grounded in the exact frequency of each detected trait — rarer traits carry more information and contribute more to the score.

Algorithm version 1.1.0

Patterns in this number

Each of these has its own page explaining how common the pattern is and why.

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