Properties of the Number 79920

Seventy-Nine Thousand Nine Hundred Twenty

Basics

Value: 79919 → 79920 → 79921

Parity: even

Prime: No

Previous Prime: 79907

Next Prime: 79939

Digit Sum: 27

Digital Root: 9

Palindrome: No

Factorization: 2 ⁴ × 3 ³ × 5 × 37

Divisors: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011100000110000

Octal: 234060

Duodecimal: 3A300

Hexadecimal: 13830

Square: 6387206400

Square Root: 282.70125574535393

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 inequivalent (mod D₄) ways four checkers can be placed on an n X n board. A242279

a(n) = 4·a(n-1) - 2·a(n-2) for n > 1; a(0) = 3, a(1) = 14. A164304

Numbers with prime factorization pqr^3s^4. A190294

Number of length n 0..1 arrays with each partial sum starting from the beginning no more than one standard deviation from its mean. A244781

Glaisher's function J(n) (18 squares version). A2613

Triangle, read by rows, where the n-th row lists the (n²+1) coefficients of (1+2·x+...+(n+1)*xⁿ)ⁿ. A329709

Expansion of (x+2) / ((x+1)*(x²-3·x+1)). A102714

Triangle read by rows: T(n,k) = binomial(n,k)*(binomial(n-1,k-1)*binomial(n+1,k+1) + binomial(n-1,k)*binomial(n+1,k)), with T(0,0) = 1. A174148

A generalized Narayana triangle for sec(x)². A180960

Numbers k such that k = Product (p_j^e_j) = Product (π(p_j)*p_j), where π() = A000720. A304194