Properties of the Number -15830

Fifteen Thousand Eight Hundred Thirty

Basics

Value: -15831 → -15830 → -15829

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 2 × 5 × 1583

Divisors: 1, 2, 5, 10, 1583, 3166, 7915, 15830

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11110111010110

Octal: -36726

Duodecimal: -91B2

Hexadecimal: -3dd6

Square: 250588900

Square Root: 125.81732790041282

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

The number of permutations p of {1,...,n} such that |p(i)-p(i+1)| is in {3,4,5} for all i from 1 to n-1. A174707

Number of non-subset-sums of strict integer partitions of n. A365922

T(n,k)=Number of (n+1)X(k+1) 0..2 arrays with no 2X2 subblock having the sum of its diagonal elements greater than the maximum of its antidiagonal elements. A251137

Arithmetic mean of two consecutive prime interprimes of second order: interprimes of third order. A126556

a(0)=-3, a(1)=4; thereafter a(n) = 2·a(n-1) + a(n-2). A221173

Expansion of (5+4x)/(1-2x-x²). A105082

Least positive integer k such that prime(k·n)² - 2 = prime(i·n)*prime(j·n) for some integers 0 < i < j. A260080

Expansion of ∑_k>0 (1/(1+x^k)⁴ - 1). A363631

Integers that do not appear in A103502. A103504

Number of positive integers k less than 10ⁿ such that k is a sum of two squares and k/2 is an even power. A275650