72880616 has 16 divisors (see below), whose sum is σ = 139984740. Its totient is φ = 35551360.

The previous prime is 72880609. The next prime is 72880663. The reversal of 72880616 is 61608827.

It can be written as a sum of positive squares in 2 ways, for example, as 72760900 + 119716 = 8530^2 + 346^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 72880616.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 110771 + ... + 111426.

Almost surely, 2^72880616 is an apocalyptic number.

It is an amenable number.

72880616 is a deficient number, since it is larger than the sum of its proper divisors (67104124).

72880616 is a wasteful number, since it uses less digits than its factorization.

72880616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222244 (or 222240 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 72880616 is about 8537.0144664279. The cubic root of 72880616 is about 417.7059659990.

The spelling of 72880616 in words is "seventy-two million, eight hundred eighty thousand, six hundred sixteen".