Properties of the Number 83040

Eighty-Three Thousand Forty

Basics

Value: 83039 → 83040 → 83041

Parity: even

Prime: No

Previous Prime: 83023

Next Prime: 83047

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 ⁵ × 3 × 5 × 173

Divisors: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10100010001100000

Octal: 242140

Duodecimal: 40080

Hexadecimal: 14460

Square: 6895641600

Square Root: 288.16661846924603

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 regions formed by drawing the lines connecting any two of the 2*(n+2) perimeter points of a 3 X (n+1) rectangular grid of points (or equally, a 2 X n grid of squares). A331766

a(n) = T(n,n-6), array T as in A055807. A55811

Triangle read by rows: Take a hexagram with all diagonals drawn, as in A331908. Then T(n,k) = number of k-sided polygons in that figure for k = 3, 4, ..., n+5. A331909

θ series of direct sum of 2 copies of 4-dimensional lattice QQF.4.i. A212817

a(n) is the smallest k such that the following are four primes: prime(n)*k-1, prime(n)*k+1, prime(n)*k²-1, prime(n)*k²+1. Or -1 if no such k exists. A266239

Number of divisors of n that are <= 4. A83040