Properties of the Number -7189

One Hundred Eighty-Nine

Basics

Value: -7190 → -7189 → -7188

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 7 × 13 × 79

Divisors: 1, 7, 13, 79, 91, 553, 1027, 7189

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -1110000010101

Octal: -16025

Duodecimal: -41B1

Hexadecimal: -1c15

Square: 51681721

Square Root: 84.78797084492588

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

a(n) = (n⁴ + n² + 2·n)/4. A6528

Generalized Mancala solitaire (A002491); to get n-th term, start with n and successively round up to next 8 multiples of n-1, n-2, ..., 1, for n>=1. A113745

Difference between first twin prime > 10ⁿ and 10ⁿ. A124001

Products of 3 distinct non-Sophie Germain primes. A157347

Numbers having exactly four representations by the quadratic form x²+xy+y² with 0<=x<=y. A198775

Products of three distinct primes of the form 6·k + 1. A154729

Number of compositions (ordered partitions) of n into distinct squarefree parts. A331846

Sum of the divisors of the n-th odd square: a(n) = σ((2·n-1)²). A379223

Numbers that are sums of divisors of the odd squares; Intersection of A065764 and A065766, written in ascending order and duplicates removed. A65768

Numbers k such that k⁴ = x³ + y² has an integer solution. A96741