Properties of the Number 17956

Seventeen Thousand Nine Hundred Fifty-Six

Basics

Value: 17955 → 17956 → 17957

Parity: even

Prime: No

Previous Prime: 17939

Next Prime: 17957

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 2 ² × 67 ²

Divisors: 1, 2, 4, 67, 134, 268, 4489, 8978, 17956

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100011000100100

Octal: 43044

Duodecimal: A484

Hexadecimal: 4624

Square: 322417936

Square Root: 134

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

Squares of the squarefree semiprimes (p²*q²). A85986

a(n) = (4n + 2)². A16826

a(n) = (7·n + 1)². A16994

a(n) = (6·n + 2)². A16934

Indices of A052344 (ways to write n as sum of two nonzero triangular numbers) where record values are reached. A53587

a(n) is the smallest nonnegative integer that can be written as a sum of two distinct nonzero triangular numbers in exactly n ways or -1 if no such integer exists. A342326

Numbers that are the sum of seven fourth powers in six or more ways. A345572

Numbers that are the sum of seven fourth powers in exactly six ways. A345828

Smallest number which is the sum of two positive triangular numbers in exactly n different ways. A52346

Indices of A052343 (ways to write n as sum of two triangular numbers) where record values are reached. A52348