78688036 has 24 divisors (see below), whose sum is σ = 166634496. Its totient is φ = 31739520.

The previous prime is 78688031. The next prime is 78688069. The reversal of 78688036 is 63088687.

It is not an unprimeable number, because it can be changed into a prime (78688031) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82180 + ... + 83131.

It is an arithmetic number, because the mean of its divisors is an integer number (6943104).

Almost surely, 2^78688036 is an apocalyptic number.

It is an amenable number.

78688036 is an abundant number, since it is smaller than the sum of its proper divisors (87946460).

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

78688036 is a wasteful number, since it uses less digits than its factorization.

78688036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165339 (or 165337 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 78688036 is about 8870.6277117237. The cubic root of 78688036 is about 428.5184926575.

The spelling of 78688036 in words is "seventy-eight million, six hundred eighty-eight thousand, thirty-six".