Properties of the Number 15979

Fifteen Thousand Nine Hundred Seventy-Nine

Basics

Value: 15978 → 15979 → 15980

Parity: odd

Prime: No

Previous Prime: 15973

Next Prime: 15991

Digit Sum: 31

Digital Root: 4

Palindrome: No

Factorization: 19 × 29 ²

Divisors: 1, 19, 29, 551, 841, 15979

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11111001101011

Octal: 37153

Duodecimal: 92B7

Hexadecimal: 3e6b

Square: 255328441

Square Root: 126.40806936267953

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) = n*(7·n²-4)/3. A63521

List of different composites in Pascal-like triangles with index of asymmetry y = 2 and index of obliquity z = 0 or z = 1. A141066

a(n) = 19·n². A244631

Number of (w,x,y) with all terms in {0,...,n} and w>floor((x+y)/3). A212974

Numbers p²*q, p > q odd primes such that q does not divide p-1, and q does not divide p+1. A350421

Composite numbers whose sum of aliquot parts divides the sum of aliquot parts of the numbers less than or equal to n and relatively prime to n. A249108

a(n) is the index of the n-th nonattacking queen placed by a greedy algorithm on a subset of N^N (see Comments for details). A309817

Totally multiplicative sequence with a(p) = 10p-1 for prime p. A166659

Number of composite Lucas numbers between the prime Lucas numbers A005479(n) and A005479(n+1). A245472

Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 421", based on the 5-celled von Neumann neighborhood. A272051