Properties of the Number 43280

Forty-Three Thousand Two Hundred Eighty

Basics

Value: 43279 → 43280 → 43281

Parity: even

Prime: No

Previous Prime: 43271

Next Prime: 43283

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 ⁴ × 5 × 541

Divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1010100100010000

Octal: 124420

Duodecimal: 21068

Hexadecimal: a910

Square: 1873158400

Square Root: 208.0384579831335

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 square binary matrices with n ones, with no zero rows or columns, up to row and column permutation. A57151

Triangle read by rows: T(n,k) is the number of cycle-up-down permutations of {1,2,...,n} having k cycles (1<=k<=n). A186366

In the "3x+1" problem, let 0 denote a halving step and 1 denote an x->3x+1 step. Then a(n) is obtained by writing the sequence of steps needed to reach 1 from 2n+1 and reading it as a decimal number. A125710

Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 26. A31704

a(n) = 64·n² + 16. A157912

a(n) = 676·n² + 2·n. A158385

a(n) = 256·n² + 16. A158574

a(n) = 169·n² + n. A173275

Number of triangles in a Star of David of size n. A299965

Number of non-isomorphic connected multiset partitions of weight n into singletons or pairs. A368726