Properties of the Number 70920

Seventy Thousand Nine Hundred Twenty

Basics

Value: 70919 → 70920 → 70921

Parity: even

Prime: No

Previous Prime: 70919

Next Prime: 70921

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ³ × 3 ² × 5 × 197

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

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001010100001000

Octal: 212410

Duodecimal: 35060

Hexadecimal: 11508

Square: 5029646400

Square Root: 266.30809225406574

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

Least positive integer k such that k and k·n are terms of A259539. A259540

Number of 2-connected outerplanar graphs on n labeled nodes. A97999

Irregular triangle read by rows: T(n,k) = number of unsigned unichromosonal genomes with n genes at 3-break distance k from a fixed genome, 0 <= k <= floor(n/2). A264614

a(n) = Card{ (x,y,z,u) | lcm(x,y,z,u)=n }. A70920

G.f. satisfies A(x) = (1 + x·A(x))² * (1 + x³*A(x)). A218251

E.g.f.: A(x) = x/Series_Reversion(x·G(x)) where G(x) = ∑_n>=0 nⁿ*xⁿ/n!. A243954

E.g.f. satisfies: A(A(A(x))) = d/dx A(x)²/2 with A(0)=0, A'(0)=1. A186632

E.g.f. satisfies: A(x) = exp( 1/A(x) * Integral A(x)^8/3 dx ). A281186