Properties of the Number 72445

Seventy-Two Thousand Four Hundred Forty-Five

Basics

Value: 72444 → 72445 → 72446

Parity: odd

Prime: No

Previous Prime: 72431

Next Prime: 72461

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 14489

Divisors: 1, 5, 14489, 72445

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001101011111101

Octal: 215375

Duodecimal: 35B11

Hexadecimal: 11afd

Square: 5248278025

Square Root: 269.15608854343236

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

p-INVERT of (1,0,0,1,0,0,1,0,0,...), where p(S) = 1 - S - 2 S². A291035

Number of subsets S of the power set P{1,2,...,n} such that: {1}, {2},..., {n} are all elements of S; {1,2,...,n} is an element of S; if X and Y are elements of S and X and Y have a nonempty intersection, then the union of X and Y is an element of S. The sets S are counted modulo permutations on the elements 1,2,...,n. A72445