78974480 has 40 divisors (see below), whose sum is σ = 197742552. Its totient is φ = 29159424.

The previous prime is 78974477. The next prime is 78974491. The reversal of 78974480 is 8447987.

It can be written as a sum of positive squares in 4 ways, for example, as 4048144 + 74926336 = 2012^2 + 8656^2 .

It is a tau number, because it is divible by the number of its divisors (40).

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, 36929 + ... + 39008.

Almost surely, 2^78974480 is an apocalyptic number.

It is an amenable number.

78974480 is an abundant number, since it is smaller than the sum of its proper divisors (118768072).

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

78974480 is a wasteful number, since it uses less digits than its factorization.

78974480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75963 (or 75957 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 47.

The square root of 78974480 is about 8886.7586891960. The cubic root of 78974480 is about 429.0378342465.

The spelling of 78974480 in words is "seventy-eight million, nine hundred seventy-four thousand, four hundred eighty".