72790688 has 12 divisors (see below), whose sum is σ = 143306730. Its totient is φ = 36395328.

The previous prime is 72790687. The next prime is 72790717. The reversal of 72790688 is 88609727.

It can be written as a sum of positive squares in only one way, i.e., 60031504 + 12759184 = 7748^2 + 3572^2 .

It is not an unprimeable number, because it can be changed into a prime (72790687) 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 as a sum of consecutive naturals, namely, 1137323 + ... + 1137386.

Almost surely, 2^72790688 is an apocalyptic number.

It is an amenable number.

72790688 is a deficient number, since it is larger than the sum of its proper divisors (70516042).

72790688 is a wasteful number, since it uses less digits than its factorization.

72790688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2274719 (or 2274711 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 47.

The square root of 72790688 is about 8531.7458940125. The cubic root of 72790688 is about 417.5340916620.

The spelling of 72790688 in words is "seventy-two million, seven hundred ninety thousand, six hundred eighty-eight".