Properties of the Number 23855

Twenty-Three Thousand Eight Hundred Fifty-Five

Basics

Value: 23854 → 23855 → 23856

Parity: odd

Prime: No

Previous Prime: 23833

Next Prime: 23857

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 13 × 367

Divisors: 1, 5, 13, 65, 367, 1835, 4771, 23855

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 101110100101111

Octal: 56457

Duodecimal: 1197B

Hexadecimal: 5d2f

Square: 569061025

Square Root: 154.45063936416707

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

a(n) = a(n-1) - (n-1)*a(n-4), with a(0) = 0, a(1) = 1, a(2) = 2, a(3) = 1. A122022

Number of lower Wythoff primes (A095280) in range ]2ⁿ,2ⁿ⁺¹]. A95290

a(n) = n + floor( n²/2 + n³/3 ). A236773

Multiplicity of highest weight (or singular) vectors associated with character chi₉ of Monster module. A34397

Number of nonempty subsets of {1,2,...,n} in which exactly 1/5 of the elements are <= n/3. A47198

Number of nonempty subsets of {1,2,...,n} in which exactly 1/5 of the elements are <= (n-1)/3. A48010

Number of nonempty subsets of {1,2,...,n} in which exactly 1/5 of the elements are <= (n+1)/3. A48043

Least k such that prime(n)*(k²) + prime(n)*k + 1 = m² = a square. A105263

a(n) = 1*(n) + 2*(n-1) + 3*(n-2) + ... + (n+1-k)*k, where k = floor((n+1)/2). A23855

Number of nX7 0..1 arrays avoiding 0 0 1 and 0 1 1 horizontally and 0 1 0 and 1 0 1 vertically. A207948