72510256 has 40 divisors (see below), whose sum is σ = 172912544. Its totient is φ = 28684800.

The previous prime is 72510173. The next prime is 72510257. The reversal of 72510256 is 65201527.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (72510257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23445 + ... + 26356.

Almost surely, 2^72510256 is an apocalyptic number.

It is an amenable number.

72510256 is an abundant number, since it is smaller than the sum of its proper divisors (100402288).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72510256 is a wasteful number, since it uses less digits than its factorization.

72510256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49829 (or 49823 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 72510256 is about 8515.2954147229. The cubic root of 72510256 is about 416.9972070118.

The spelling of 72510256 in words is "seventy-two million, five hundred ten thousand, two hundred fifty-six".