72775908 has 30 divisors (see below), whose sum is σ = 190251446. Its totient is φ = 24258528.

The previous prime is 72775897. The next prime is 72775931. The reversal of 72775908 is 80957727.

It can be written as a sum of positive squares in only one way, i.e., 54730404 + 18045504 = 7398^2 + 4248^2 .

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 9 ways as a sum of consecutive naturals, for example, 111985 + ... + 112632.

Almost surely, 2^72775908 is an apocalyptic number.

It is an amenable number.

72775908 is an abundant number, since it is smaller than the sum of its proper divisors (117475538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72775908 is a wasteful number, since it uses less digits than its factorization.

72775908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224633 (or 224622 counting only the distinct ones).

The product of its (nonzero) digits is 246960, while the sum is 45.

The square root of 72775908 is about 8530.8796732811. The cubic root of 72775908 is about 417.5058299352.

The spelling of 72775908 in words is "seventy-two million, seven hundred seventy-five thousand, nine hundred eight".