78597988 has 12 divisors (see below), whose sum is σ = 157196032. Its totient is φ = 33684840.

The previous prime is 78597913. The next prime is 78597997. The reversal of 78597988 is 88979587.

78597988 is an admirable number.

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, 1403508 + ... + 1403563.

Almost surely, 2^78597988 is an apocalyptic number.

It is an amenable number.

78597988 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78597988 is a wasteful number, since it uses less digits than its factorization.

78597988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2807082 (or 2807080 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 61.

The square root of 78597988 is about 8865.5506315175. The cubic root of 78597988 is about 428.3549694424.

The spelling of 78597988 in words is "seventy-eight million, five hundred ninety-seven thousand, nine hundred eighty-eight".