Properties of the Number 23975

Twenty-Three Thousand Nine Hundred Seventy-Five

Basics

Value: 23974 → 23975 → 23976

Parity: odd

Prime: No

Previous Prime: 23971

Next Prime: 23977

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 5 ² × 7 × 137

Divisors: 1, 5, 7, 25, 35, 137, 175, 685, 959, 3425

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110110100111

Octal: 56647

Duodecimal: 11A5B

Hexadecimal: 5da7

Square: 574800625

Square Root: 154.8386256720202

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 partitions of n having no doubletons. By a doubleton in a partition we mean an occurrence of a part exactly twice (the partition [4,(3,3),2,2,2,(1,1)] of 18 has two doubletons, shown between parentheses). A116645

Triangle read by rows, T(n,k) = ∑_j=0..n C(n,j)*L(j,k), L the unsigned Lah numbers A271703, for n>=0 and 0<=k<=n. A271705

a(n) = 74·n² - 1. A158744

Smallest odd number greater than any previous term such that it divides the concatenation of all the previous terms and itself; begin with 1. A228806

a(n) = ∑_i=0..n T(i,n-i), array T as in A049735. A49736

First bit in fractional part of binary expansion of 8th root of n. A23975