Properties of the Number 72739

Seventy-Two Thousand Seven Hundred Thirty-Nine

Basics

Value: 72738 → 72739 → 72740

Parity: odd

Prime: Yes

Previous Prime: 72733

Next Prime: 72763

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 72739

Divisors: 1, 72739

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10001110000100011

Octal: 216043

Duodecimal: 36117

Hexadecimal: 11c23

Square: 5290962121

Square Root: 269.70168705441944

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

Let a,b be prime numbers satisfying the Diophantine equation a³+b³=(a+b)*(a²-a·b+b²)=c². Then the second factor a²-a·b+b² is 3·e² for some integer e. This sequence tabulates the 'e' values, sorted by magnitude of c. A99809

A Chebyshev transform of the little Schroeder numbers A001003. A162548

Primes whose 10's complement is a triangular number. A82992

Primes p such that there exist primes p'<p"<p"'<p""<p such that the concatenation of any two among the {p,...,p""} is prime. A139005

Y-projection of the tabular N X N -> N bijection A072733. A72739