Properties of the Number 43638

Forty-Three Thousand Six Hundred Thirty-Eight

Basics

Value: 43637 → 43638 → 43639

Parity: even

Prime: No

Previous Prime: 43633

Next Prime: 43649

Digit Sum: 24

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 7 × 1039

Divisors: 1, 2, 3, 6, 7, 14, 21, 42, 1039, 2078

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010101001110110

Octal: 125166

Duodecimal: 21306

Hexadecimal: aa76

Square: 1904275044

Square Root: 208.8971038573776

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

Triangle read by rows: T(n,k) = number of permutations p of 1,...,n, with min(|p(i)-p(i-1)|, i=2..n) = k (n>=2, k>=1). A129534

The number of monic integer polynomials of degree n all of whose roots are distinct and of modulus at most 1. A280709

Number of strings of numbers x(i=1..n) in 0..6 with sum i·x(i)² equal to n·36. A184438

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 657", based on the 5-celled von Neumann neighborhood. A273336

Numbers k such that (10^k - 97)/3 is prime. A293757

T(n,k)=Number of strings of numbers x(i=1..n) in 0..k with sum i·x(i)² equal to n·k². A184441

a(n) = 10ⁿ mod 7. A33940

Numbers whose base-10 representation has exactly 2 runs. A43638