Properties of the Number 28136

Twenty-Eight Thousand One Hundred Thirty-Six

Basics

Value: 28135 → 28136 → 28137

Parity: even

Prime: No

Previous Prime: 28123

Next Prime: 28151

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 2 ³ × 3517

Divisors: 1, 2, 4, 8, 3517, 7034, 14068, 28136

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 110110111101000

Octal: 66750

Duodecimal: 14348

Hexadecimal: 6de8

Square: 791634496

Square Root: 167.73789077009405

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Number of compositions of n into positive triangular numbers. A23361

Numerators of convergents of the continued fraction with the n+1 partial quotients: [1;1,1,...(n 1's)...,1,n+1], starting with [1], [1;2], [1;1,3], [1;1,1,4], ... A88209

Number of compositions of n² into sums of positive triangular numbers. A224679

Fibonacci sequence beginning 1, 17. A22107

Number of 3 X n 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 0 vertically. A207306

Number of compositions (ordered partitions) of n into two or more triangular numbers. A348529

Sum of (Gaussian) q-binomial coefficients for q=-5. A15167

Number of partitions of n into parts not of the form 23k, 23k+6 or 23k-6. Also number of partitions with at most 5 parts of size 1 and differences between parts at distance 10 are greater than 1. A35994

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 0 1 and 1 1 0 vertically. A207305

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 1 0 1 horizontally and 0 1 0 and 1 0 1 vertically. A207918