Properties of the Number -520731

Five Hundred Twenty Thousand Seven Hundred Thirty-One

Basics

Value: -520732 → -520731 → -520730

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 57859

Divisors: 1, 3, 9, 57859, 173577, 520731

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: -1111111001000011011

Octal: -1771033

Duodecimal: -211423

Hexadecimal: -7f21b

Square: 271160774361

Square Root: 721.6169343910937

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

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

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

Least k such that A052343(k)=n. A52345

Smallest number which is the sum of two positive triangular numbers (A000217) in at least n ways. A234004