Properties of the Number 80104

Eighty Thousand One Hundred Four

Basics

Value: 80103 → 80104 → 80105

Parity: even

Prime: No

Previous Prime: 80077

Next Prime: 80107

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 17 × 19 × 31

Divisors: 1, 2, 4, 8, 17, 19, 31, 34, 38, 62

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10011100011101000

Octal: 234350

Duodecimal: 3A434

Hexadecimal: 138e8

Square: 6416650816

Square Root: 283.0265005260108

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

Numbers k such that σ(k) = ψ(k) + φ(k). A389478

Number of n-input 2-output switching networks under action of GL(n,2) on the inputs and complementing group C(2,2) on the outputs. A847

Numbers n such that σ(n) = 5*φ(n). A136547

Expansion of x⁴*(2+x)/((1+x)*(1-x)⁵). A82289

Fibonacci sequence beginning 0, 31. A22365

Numbers k such that φ(k) = σ(core(k)) where φ(k) is the Euler totient function, σ(k) the sum of divisors of k and core(k) the squarefree part of k (the smallest integer such that k·core(k) is a square). A69552

A triangular sequence of six back recursive polynomial that are Hermite H(x,n) like and alternating orthogonal on domain {-Infinity,Infinity} and weight function Exp[ -x²/2]:k=6 P(x, n) = Sum[If[Mod[m, 2] == 1, (m + 1)*x^m*P(x, n - m), n^m/2*P(x, n - m)], {m, 1, k}]. A138093

A triangular sequence of eight back recursive polynomials that are Hermite H(x,n) like and alternating orthogonal on domain {-Infinity,Infinity} and weight function Exp[ -x²/2]:k=8 P(x, n) = Sum[If[Mod[m, 2] == 1, (m + 1)*x^m*P(x, n - m), n^m/2*P(x, n - m)], {m, 1, k}]. A138094

Le Corbusier's "modular" (or "modulor") numbers, based on the proportions of an ideal man. A80104

Expansion of 1/((1-x)*(1-4·x)*(1-10·x)*(1-20·x)*(1-35·x)). A227273