Properties of the Number 72217

Seventy-Two Thousand Two Hundred Seventeen

Basics

Value: 72216 → 72217 → 72218

Parity: odd

Prime: No

Previous Prime: 72211

Next Prime: 72221

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 257 × 281

Divisors: 1, 257, 281, 72217

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001101000011001

Octal: 215031

Duodecimal: 35961

Hexadecimal: 11a19

Square: 5215295089

Square Root: 268.7322087134328

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

Number of primes < prime(n)³. A86688

Consider the Reverse and Add! problem (cf. A001127); of all the n-digit numbers N which eventually reach a palindrome, pick that number N which takes the greatest number of steps to converge (in case of a tie, pick the smallest N); sequence gives number of steps N takes to converge. A72217