72790628 has 6 divisors (see below), whose sum is σ = 127383606. Its totient is φ = 36395312.

The previous prime is 72790603. The next prime is 72790633. The reversal of 72790628 is 82609727.

It can be written as a sum of positive squares in only one way, i.e., 68029504 + 4761124 = 8248^2 + 2182^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9098825 + ... + 9098832.

It is an arithmetic number, because the mean of its divisors is an integer number (21230601).

Almost surely, 2^72790628 is an apocalyptic number.

It is an amenable number.

72790628 is a deficient number, since it is larger than the sum of its proper divisors (54592978).

72790628 is a wasteful number, since it uses less digits than its factorization.

72790628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18197661 (or 18197659 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 72790628 is about 8531.7423777327. The cubic root of 72790628 is about 417.5339769401.

The spelling of 72790628 in words is "seventy-two million, seven hundred ninety thousand, six hundred twenty-eight".