Properties of the Number 72900

Seventy-Two Thousand Nine Hundred

Basics

Value: 72899 → 72900 → 72901

Parity: even

Prime: No

Previous Prime: 72893

Next Prime: 72901

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 2 ² × 3 ⁶ × 5 ²

Divisors: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15

Polygonal

Triangular: No

Square: Yes

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001110011000100

Octal: 216304

Duodecimal: 36230

Hexadecimal: 11cc4

Square: 5314410000

Square Root: 270

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: Yes

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

Triangle read by rows: terms T(n,k) of a binomial decomposition of nⁿ as Sum(k=0..n)T(n,k). A244123

Numbers of form 3ⁱ*10^j, with i, j >= 0. A25616

Numbers of form 9ⁱ*10^j, with i, j >= 0. A25635

Number of polygon edges formed when every pair of vertices of a regular n-gon are joined by an infinite line. A344899

a(n) = floor(n/5)*floor((n+1)/5)*floor((n+2)/5)*floor((n+3)/5)*floor((n+4)/5). A8382

a(n) = (11·n + 6)². A17462

Squares with initial digit '7'. A45791

a(n) = (6·n)². A16910

Square associated with twin primes (p,p+2): p(p+2) + 1. Square of the average of twin primes. A75369

Numbers whose base-3 representation is a square when read in base 10. A267763