78578196 has 24 divisors (see below), whose sum is σ = 183786624. Its totient is φ = 26130240.

The previous prime is 78578179. The next prime is 78578207. The reversal of 78578196 is 69187587.

It is a super-2 number, since 2×78578196² = 12349065773228832, which contains 22 as substring.

It is a congruent number.

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, 2425 + ... + 12768.

It is an arithmetic number, because the mean of its divisors is an integer number (7657776).

Almost surely, 2^78578196 is an apocalyptic number.

It is an amenable number.

78578196 is an abundant number, since it is smaller than the sum of its proper divisors (105208428).

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

78578196 is a wasteful number, since it uses less digits than its factorization.

78578196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15631 (or 15629 counting only the distinct ones).

The product of its digits is 846720, while the sum is 51.

The square root of 78578196 is about 8864.4343305143. The cubic root of 78578196 is about 428.3190112986.

The spelling of 78578196 in words is "seventy-eight million, five hundred seventy-eight thousand, one hundred ninety-six".