Properties of the Number 80680

Eighty Thousand Six Hundred Eighty

Basics

Value: 80679 → 80680 → 80681

Parity: even

Prime: No

Previous Prime: 80677

Next Prime: 80681

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 2 ³ × 5 × 2017

Divisors: 1, 2, 4, 5, 8, 10, 20, 40, 2017, 4034

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2730 Try Today's Challenge

Representations

Binary: 10011101100101000

Octal: 235450

Duodecimal: 3A834

Hexadecimal: 13b28

Square: 6509262400

Square Root: 284.0422503783548

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 2 X 2 matrices having all terms in {1,...,n} and nonnegative determinant. A211058

Number of hopping sequences in four-colored rooted trees with n nodes, starting and ending with the same "initial state" from all of the (two-colored) rooted trees in A198760. Compared to A198761, only one node color of the initial states is mobile on the tree (Falicov-Kimball model). A225823

Number of base 32 circular n-digit numbers with adjacent digits differing by 8 or less. A125467

Triangle of coefficients of the permanent polynomial of rectangular Dancing School matrices. A392509

Solution to the Dancing School Problem with 8 girls and n+8 boys: f(8,n). A79913

Number of nX4 0..1 arrays with every element equal to 1, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero. A300685

Integer part of the square root of the n-th prime of the form 4k+1. A80680