Properties of the Number -15679

Fifteen Thousand Six Hundred Seventy-Nine

Basics

Value: -15680 → -15679 → -15678

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 15679

Divisors: 1, 15679

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11110100111111

Octal: -36477

Duodecimal: -90A7

Hexadecimal: -3d3f

Square: 245831041

Square Root: 125.21581369779138

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

Expansion of 1/(1-x*(1-5·x)). A106854

Expansion of (1 + 5·x)/(1 + 9·x + 25·x²). A87171

Smallest of three consecutive primes whose sum is a square. A206279

a(n)=A085956(3n). A86361

Primes whose sum of digits is the perfect number 28. A48517

a(n) = 20·n² - 1. A158491

Primes that remain prime through 3 iterations of function f(x) = 5x + 6. A23285

Primes p such that p and p² have same digit sum. A58370

a(0)=2; for n>0, a(n) = smallest prime not occurring earlier in the sequence such that a(n-1)+a(n) is a multiple of n². If no such prime exists, the sequence terminates. A224223

Primes that remain prime through 4 iterations of function f(x) = 5·x + 6. A23315