72782788 has 24 divisors (see below), whose sum is σ = 138436760. Its totient is φ = 33281280.

The previous prime is 72782771. The next prime is 72782803. The reversal of 72782788 is 88728727.

It can be written as a sum of positive squares in 4 ways, for example, as 5673924 + 67108864 = 2382^2 + 8192^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 753 + ... + 12088.

Almost surely, 2^72782788 is an apocalyptic number.

It is an amenable number.

72782788 is a deficient number, since it is larger than the sum of its proper divisors (65653972).

72782788 is a wasteful number, since it uses less digits than its factorization.

72782788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12967 (or 12965 counting only the distinct ones).

The product of its digits is 702464, while the sum is 49.

The square root of 72782788 is about 8531.2829046984. The cubic root of 72782788 is about 417.5189860729.

The spelling of 72782788 in words is "seventy-two million, seven hundred eighty-two thousand, seven hundred eighty-eight".