78990504 has 16 divisors (see below), whose sum is σ = 197476320. Its totient is φ = 26330160.

The previous prime is 78990497. The next prime is 78990529. The reversal of 78990504 is 40509987.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1645612 + ... + 1645659.

It is an arithmetic number, because the mean of its divisors is an integer number (12342270).

Almost surely, 2^78990504 is an apocalyptic number.

It is an amenable number.

78990504 is an abundant number, since it is smaller than the sum of its proper divisors (118485816).

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

78990504 is a wasteful number, since it uses less digits than its factorization.

78990504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291280 (or 3291276 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 78990504 is about 8887.6602095265. The cubic root of 78990504 is about 429.0668496843.

The spelling of 78990504 in words is "seventy-eight million, nine hundred ninety thousand, five hundred four".