Properties of the Number 23856

Twenty-Three Thousand Eight Hundred Fifty-Six

Basics

Value: 23855 → 23856 → 23857

Parity: even

Prime: No

Previous Prime: 23833

Next Prime: 23857

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 ⁴ × 3 × 7 × 71

Divisors: 1, 2, 3, 4, 6, 7, 8, 12, 14, 16

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110100110000

Octal: 56460

Duodecimal: 11980

Hexadecimal: 5d30

Square: 569108736

Square Root: 154.45387661046257

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 1 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically. A207068

Sum of the prime parts in the partitions of n into 8 parts. A309469

Volume of right circular cone (rounded down) with the diameter of base and height equal to n. A228189

Triangle of coefficients of polynomials v(n,x) jointly generated with A209139; see the Formula section. A209140

Numbers k such that 11^φ(k) == 1 (mod k²), where φ(k) = A000010(k). A253016

Expansion of η(q²)¹² * η(q⁴)⁸ / η(q)⁸ in powers of q. A286399

Numbers k such that (Sum of totatives of k) == 1 (mod Sum of primes dividing k with multiplicity). A340299

Expansion of 1/(1-x⁴-x⁵-x⁶-x⁷-x⁸-x⁹-x¹⁰-x¹¹-x¹²). A17834

Number of n X 6 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically. A207066

Number of 5Xn 0..1 arrays avoiding 0 0 1 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically. A207072