72901624 has 16 divisors (see below), whose sum is σ = 136785600. Its totient is φ = 36425472.

The previous prime is 72901607. The next prime is 72901663. The reversal of 72901624 is 42610927.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 15592 + ... + 19720.

It is an arithmetic number, because the mean of its divisors is an integer number (8549100).

Almost surely, 2^72901624 is an apocalyptic number.

It is an amenable number.

72901624 is a deficient number, since it is larger than the sum of its proper divisors (63883976).

72901624 is a wasteful number, since it uses less digits than its factorization.

72901624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6342 (or 6338 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 72901624 is about 8538.2447844976. The cubic root of 72901624 is about 417.7460970351.

The spelling of 72901624 in words is "seventy-two million, nine hundred one thousand, six hundred twenty-four".