Properties of the Number 23645

Twenty-Three Thousand Six Hundred Forty-Five

Basics

Value: 23644 → 23645 → 23646

Parity: odd

Prime: No

Previous Prime: 23633

Next Prime: 23663

Digit Sum: 20

Digital Root: 2

Palindrome: No

Factorization: 5 × 4729

Divisors: 1, 5, 4729, 23645

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 101110001011101

Octal: 56135

Duodecimal: 11825

Hexadecimal: 5c5d

Square: 559086025

Square Root: 153.7693077307692

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

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically. A207467

T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 0 and 1 0 1 vertically. A207519

Positive numbers y such that y² is of the form x²+(x+73)² with integer x. A160041

Number of n X 4 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically. A207463

Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically. A207470

Number of 6Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 1 0 and 1 0 1 vertically. A207522

Main diagonal of A332367, divided by 4. A332368

Numbers k such that 203·2^k + 1 is prime. A32478

a(n) = τ(n)-1 if n is odd or τ(n)-2 if n is even. A23645