74920880 has 20 divisors (see below), whose sum is σ = 174191232. Its totient is φ = 29968320.

The previous prime is 74920847. The next prime is 74920883. The reversal of 74920880 is 8802947.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×74920880² = 11226276519948800, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (74920883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468176 + ... + 468335.

Almost surely, 2^74920880 is an apocalyptic number.

It is an amenable number.

74920880 is an abundant number, since it is smaller than the sum of its proper divisors (99270352).

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

74920880 is a wasteful number, since it uses less digits than its factorization.

74920880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936524 (or 936518 counting only the distinct ones).

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

The square root of 74920880 is about 8655.6848371460. The cubic root of 74920880 is about 421.5679862679.

The spelling of 74920880 in words is "seventy-four million, nine hundred twenty thousand, eight hundred eighty".