72272757 has 16 divisors (see below), whose sum is σ = 97598592. Its totient is φ = 47568960.

The previous prime is 72272741. The next prime is 72272771. The reversal of 72272757 is 75727227.

It is not a de Polignac number, because 72272757 - 2⁴ = 72272741 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72272737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90283 + ... + 91079.

It is an arithmetic number, because the mean of its divisors is an integer number (6099912).

Almost surely, 2^72272757 is an apocalyptic number.

It is an amenable number.

72272757 is a deficient number, since it is larger than the sum of its proper divisors (25325835).

72272757 is a wasteful number, since it uses less digits than its factorization.

72272757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148.

The product of its digits is 96040, while the sum is 39.

The square root of 72272757 is about 8501.3385416651. The cubic root of 72272757 is about 416.5414335816.

The spelling of 72272757 in words is "seventy-two million, two hundred seventy-two thousand, seven hundred fifty-seven".