Properties of the Number 23897

Twenty-Three Thousand Eight Hundred Ninety-Seven

Basics

Value: 23896 → 23897 → 23898

Parity: odd

Prime: No

Previous Prime: 23893

Next Prime: 23899

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 23 × 1039

Divisors: 1, 23, 1039, 23897

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110101011001

Octal: 56531

Duodecimal: 119B5

Hexadecimal: 5d59

Square: 571066609

Square Root: 154.58654533949584

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 p of n such that (number of even numbers in p) >= 2*(number of odd numbers in p). A241644

Numbers k such that 216·k+108 is a term of A097703 and A007494 and A098240. A98241

a(0) = 1; a(n) = ∑_{k=0..floor((n-1)/3)} binomial(n-2·k-1,k) * a(k). A352042

a(n) = ∑_m=1..n gcd(s(n,m), S(n,m)), where s(n,m) is an unsigned Stirling number of the first kind and S(n,m) is a Stirling number of the second kind. A128266

Number of length n+2 0..6 arrays with every three consecutive terms having the sum of some two elements equal to twice the third. A248431

a(n) = sigma₁(k) / φ(k) where k = A020492(n) is the n-th balanced number. A23897