78626992 has 10 divisors (see below), whose sum is σ = 152339828. Its totient is φ = 39313488.

The previous prime is 78626957. The next prime is 78627049. The reversal of 78626992 is 29962687.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2457078 + ... + 2457109.

Almost surely, 2^78626992 is an apocalyptic number.

It is an amenable number.

78626992 is a deficient number, since it is larger than the sum of its proper divisors (73712836).

78626992 is a wasteful number, since it uses less digits than its factorization.

78626992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4914195 (or 4914189 counting only the distinct ones).

The product of its digits is 653184, while the sum is 49.

The square root of 78626992 is about 8867.1862504404. The cubic root of 78626992 is about 428.4076530625.

The spelling of 78626992 in words is "seventy-eight million, six hundred twenty-six thousand, nine hundred ninety-two".