Properties of the Number 72660

Seventy-Two Thousand Six Hundred Sixty

Basics

Value: 72659 → 72660 → 72661

Parity: even

Prime: No

Previous Prime: 72649

Next Prime: 72661

Digit Sum: 21

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 5 × 7 × 173

Divisors: 1, 2, 3, 4, 5, 6, 7, 10, 12, 14

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001101111010100

Octal: 215724

Duodecimal: 36070

Hexadecimal: 11bd4

Square: 5279475600

Square Root: 269.55518915428064

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 n for which 2 < A257993(A276086(A276086(n))) < A257993(n), where A276086 converts the primorial base expansion of n into its prime product form, and A257993 returns the index of the least prime not present in its argument. A328762

Number of n X 2 0..2 arrays with horizontal differences mod 3 never 1, vertical differences mod 3 never -1, rows lexicographically nondecreasing, and columns lexicographically nonincreasing. A229422

Least positive integer k such that both k and k·n belong to the set {m>0: m+1, m²+1 and m²+prime(m)² are all prime}. A261339

Triangle read by rows in which T(n,k) is the number of length k chains from (0,0) to (n,n) of the poset [n] X [n] ordered by the product order, 0 <= k <= 2n, n>=0. A316649

Partial sums of A048694. A48770

Size of the parenthesizations obtained with the global ranking/unranking scheme A072656-A072659. A72660

a(n) = 6144·n⁴ - 29184·n³ + 52416·n² - 41840·n + 12465. A272132