78694308 has 96 divisors (see below), whose sum is σ = 254392320. Its totient is φ = 20437920.

The previous prime is 78694283. The next prime is 78694321. The reversal of 78694308 is 80349687.

It is a happy number.

It is a super-2 number, since 2×78694308² = 12385588223197728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3585 + ... + 13047.

It is an arithmetic number, because the mean of its divisors is an integer number (2649920).

Almost surely, 2^78694308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78694308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (127196160).

78694308 is an abundant number, since it is smaller than the sum of its proper divisors (175698012).

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

78694308 is a wasteful number, since it uses less digits than its factorization.

78694308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9494 (or 9486 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 78694308 is about 8870.9812309575. The cubic root of 78694308 is about 428.5298776860.

The spelling of 78694308 in words is "seventy-eight million, six hundred ninety-four thousand, three hundred eight".