72957507 has 8 divisors (see below), whose sum is σ = 111173376. Its totient is φ = 41689992.

The previous prime is 72957499. The next prime is 72957517. The reversal of 72957507 is 70575927.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72957507 - 2³ = 72957499 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (72957517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1737063 + ... + 1737104.

It is an arithmetic number, because the mean of its divisors is an integer number (13896672).

Almost surely, 2^72957507 is an apocalyptic number.

72957507 is a deficient number, since it is larger than the sum of its proper divisors (38215869).

72957507 is a wasteful number, since it uses less digits than its factorization.

72957507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474177.

The product of its (nonzero) digits is 154350, while the sum is 42.

The square root of 72957507 is about 8541.5166686017. The cubic root of 72957507 is about 417.8528113595.

The spelling of 72957507 in words is "seventy-two million, nine hundred fifty-seven thousand, five hundred seven".