72974788 has 24 divisors (see below), whose sum is σ = 134288280. Its totient is φ = 34648320.

The previous prime is 72974777. The next prime is 72974807. The reversal of 72974788 is 88747927.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 248004 + 72726784 = 498^2 + 8528^2 .

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, 1920 + ... + 12232.

It is an arithmetic number, because the mean of its divisors is an integer number (5595345).

Almost surely, 2^72974788 is an apocalyptic number.

It is an amenable number.

72974788 is a deficient number, since it is larger than the sum of its proper divisors (61313492).

72974788 is a wasteful number, since it uses less digits than its factorization.

72974788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10407 (or 10405 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 52.

The square root of 72974788 is about 8542.5281972025. The cubic root of 72974788 is about 417.8858001712.

The spelling of 72974788 in words is "seventy-two million, nine hundred seventy-four thousand, seven hundred eighty-eight".