Properties of the Number -12927

Twelve Thousand Nine Hundred Twenty-Seven

Basics

Value: -12928 → -12927 → -12926

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 3 × 31 × 139

Divisors: 1, 3, 31, 93, 139, 417, 4309, 12927

Polygonal

Triangular: No

Square: No

Pentagonal: Yes

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11001001111111

Octal: -31177

Duodecimal: -7593

Hexadecimal: -327f

Square: 167107329

Square Root: 113.69696565871932

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 integer partitions of n such that the parts have the same mean as the multiplicities. A360068

Number of regions in regular n-gon which are quadrilaterals (4-gons) when all its diagonals are drawn. A67151

Number of integer partitions of n with one fewer distinct multiplicities than distinct parts. A325244

Numbers k such that ∑_j=1..k j^φ(j) == 0 (mod k). A227429

a(n) = 2·a(n-1) + 1 for a(n-1) not prime, otherwise a(n) = prime(n) - 1; with a(1)=1. A374965

Number of plane regions after drawing (in general position) a convex n-gon and all its diagonals. A27927

Number of partitions of n into parts congruent to {0, 1, 3, 5} mod 6. A96981

Pentagonal numbers (A000326) which are the sum of 2 other positive pentagonal numbers. A136117

Sum of digits when A328316(n) is written in primorial base; number of prime factors in A328316(1+n), counted with multiplicity. A328319

Pentagonal numbers (A000326) in which parity of digits alternates. A297644