78739368 has 64 divisors (see below), whose sum is σ = 201139200. Its totient is φ = 25681920.

The previous prime is 78739357. The next prime is 78739387. The reversal of 78739368 is 86393787.

It is a self number, because there is not a number n which added to its sum of digits gives 78739368.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 407880 + ... + 408072.

It is an arithmetic number, because the mean of its divisors is an integer number (3142800).

Almost surely, 2^78739368 is an apocalyptic number.

It is an amenable number.

78739368 is an abundant number, since it is smaller than the sum of its proper divisors (122399832).

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

78739368 is a wasteful number, since it uses less digits than its factorization.

78739368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 482 (or 478 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 51.

The square root of 78739368 is about 8873.5206090931. The cubic root of 78739368 is about 428.6116534943.

The spelling of 78739368 in words is "seventy-eight million, seven hundred thirty-nine thousand, three hundred sixty-eight".