Properties of the Number 72045

Seventy-Two Thousand Forty-Five

Basics

Value: 72044 → 72045 → 72046

Parity: odd

Prime: No

Previous Prime: 72043

Next Prime: 72047

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 5 × 1601

Divisors: 1, 3, 5, 9, 15, 45, 1601, 4803, 8005, 14409

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001100101101101

Octal: 214555

Duodecimal: 35839

Hexadecimal: 1196d

Square: 5190482025

Square Root: 268.41199675126296

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

Sum of numbers that can be written as t·n + u*(n+1) for nonnegative integers t,u in exactly n ways. A76459

Alternating sums of powers of 1,2,...,6, divided by 3. A198629

Number of (n+1)X(2+1) 0..2 arrays x(i,j) with every row sum{j·x(i,j), j=1..2+1} equal, and every column sum{i·x(i,j), i=1..n+1} equal. A232610

Denominator of Product{prime(k)²/(prime(k)² - 1) | 0<k<=n}, Numerator: A072044. A72045