72189604 has 24 divisors (see below), whose sum is σ = 131725440. Its totient is φ = 34585824.

The previous prime is 72189587. The next prime is 72189629. The reversal of 72189604 is 40698127.

It is a super-2 number, since 2×72189604² = 10422677851353632, which contains 22 as substring.

It is an unprimeable number.

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, 5157 + ... + 13075.

It is an arithmetic number, because the mean of its divisors is an integer number (5488560).

Almost surely, 2^72189604 is an apocalyptic number.

It is an amenable number.

72189604 is a deficient number, since it is larger than the sum of its proper divisors (59535836).

72189604 is a wasteful number, since it uses less digits than its factorization.

72189604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8019 (or 8017 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 72189604 is about 8496.4465513531. The cubic root of 72189604 is about 416.3816225018.

The spelling of 72189604 in words is "seventy-two million, one hundred eighty-nine thousand, six hundred four".