Properties of the Number 72728

Seventy-Two Thousand Seven Hundred Twenty-Eight

Basics

Value: 72727 → 72728 → 72729

Parity: even

Prime: No

Previous Prime: 72727

Next Prime: 72733

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 2 ³ × 9091

Divisors: 1, 2, 4, 8, 9091, 18182, 36364, 72728

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001110000011000

Octal: 216030

Duodecimal: 36108

Hexadecimal: 11c18

Square: 5289361984

Square Root: 269.6812933816508

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 k*(k+4) gives the concatenation of a number m with itself. A116288

a(n)=sum(k=1,n,C(n,n reduced (mod k))). A72953

Numerator of rationals >= 1 whose continued fractions consist only of 1's and 2's, in ascending order by the sum of the continued fraction terms and descending by lowest order continued fraction terms to highest. A72728

Primitive numbers whose decimal expansion of 1/n is equidistributed in base 10. A73761