Properties of the Number -87723

Eighty-Seven Thousand Seven Hundred Twenty-Three

Basics

Value: -87724 → -87723 → -87722

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 3 ⁵ × 19 ²

Divisors: 1, 3, 9, 19, 27, 57, 81, 171, 243, 361

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -10101011010101011

Octal: -253253

Duodecimal: -42923

Hexadecimal: -156ab

Square: 7695324729

Square Root: 296.180688094278

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

Numbers n such that n divides 2ⁿ + 1. A6521

Product of the 5th power of a prime and different distinct prime of the 2nd power (p⁵*q²). A179646

Numbers k such that k | 8^k + 1. A15955

Numbers n such that n is a substring of its square in base 8 (written in base 10). A18832

a(n) = - a(n-1) + 5(a(n-2) + a(n-3)) - 2(a(n-4) + a(n-5)) - 8(a(n-6) + a(n-7)). A90597

Numbers n such that n divides 2ⁿ^2 + 1. A93546

Composite numbers m such that (4^m - 2^m + 8·m² - 2) / (2·m*(2·m + 1)) is an integer. A235540

Pseudo-powers to base 3: numbers k that are not powers of 3 such that k divides 2^k + 1. A16057

Numbers k that divide 2^k³ + 1. A93665

Terms k of A006521 such that 2·k is a term of A124240. A289257