Properties of the Number 23905

Twenty-Three Thousand Nine Hundred Five

Basics

Value: 23904 → 23905 → 23906

Parity: odd

Prime: No

Previous Prime: 23899

Next Prime: 23909

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 5 × 7 × 683

Divisors: 1, 5, 7, 35, 683, 3415, 4781, 23905

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 101110101100001

Octal: 56541

Duodecimal: 11A01

Hexadecimal: 5d61

Square: 571449025

Square Root: 154.61241864740362

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) = dot_product(1,2,...,n)*(3,4,...,n,1,2). A26037

Triangle of numbers C⁶(n,k) of combinations with repetitions from n different elements over k for each of them not more than 6 appearances allowed. A213745

Tenth column (k=9) of septinomial array A063265. A63418

Number of compositions of n into exactly n nonnegative parts <= six. A318114

a(n) = 6·binomial(n,4) + 6·binomial(n,3) + 4·binomial(n,2) + 2·n + 1. A385689

Number of nX4 0..1 arrays with every element unequal to 0, 1, 2, 6 or 7 king-move adjacent elements, with upper left element zero. A305036

Number of permutations of length n which avoid the patterns 1432, 2134, 2314. A116797

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 1), (-1, 1, -1), (1, -1, 0), (1, -1, 1), (1, 1, 0)}. A149112

Expansion of x² * (3+x-x²) / (1-x)⁴. A393231

θ series of A₁₄ lattice. A23905