Properties of the Number 72205

Seventy-Two Thousand Two Hundred Five

Basics

Value: 72204 → 72205 → 72206

Parity: odd

Prime: No

Previous Prime: 72173

Next Prime: 72211

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 5 × 7 × 2063

Divisors: 1, 5, 7, 35, 2063, 10315, 14441, 72205

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

5184 Try Today's Challenge

Representations

Binary: 10001101000001101

Octal: 215015

Duodecimal: 35951

Hexadecimal: 11a0d

Square: 5213562025

Square Root: 268.7098807264072

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

Triangular array of numbers of 2-polymatroids of rank k on n unlabeled points, for n>=0, 0<=k<=2n. A256156

Number of set partitions of [n] such that ten is a multiple of each block size. A275428

a(n) = (p² - p + 2)/2 for p = prime(n); number of squares modulo p². A72205