Properties of the Number 72801

Seventy-Two Thousand Eight Hundred One

Basics

Value: 72800 → 72801 → 72802

Parity: odd

Prime: No

Previous Prime: 72797

Next Prime: 72817

Digit Sum: 18

Digital Root: 9

Palindrome: No

Factorization: 3 ² × 8089

Divisors: 1, 3, 9, 8089, 24267, 72801

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001110001100001

Octal: 216141

Duodecimal: 36169

Hexadecimal: 11c61

Square: 5299985601

Square Root: 269.81660438156877

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

Triangle read by rows: Each row is constructed by forming the partial sums of the previous row, reading from the right and at every third row repeating the final term. A99961

Triangle read by rows: T(n,k) = 2·A011971(n,k) - 1. A136791

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 1, -1), (1, -1, 0), (1, 1, -1), (1, 1, 1)}. A149609

Continued fraction expansion of ∏_{p prime} (1 - 1/(p*(p²-1))). A72801