78736930 has 16 divisors (see below), whose sum is σ = 143521920. Its totient is φ = 31095792.

The previous prime is 78736927. The next prime is 78736939. The reversal of 78736930 is 3963787.

It is not an unprimeable number, because it can be changed into a prime (78736939) 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, 49044 + ... + 50623.

It is an arithmetic number, because the mean of its divisors is an integer number (8970120).

Almost surely, 2^78736930 is an apocalyptic number.

78736930 is a deficient number, since it is larger than the sum of its proper divisors (64784990).

78736930 is a wasteful number, since it uses less digits than its factorization.

78736930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99753.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 78736930 is about 8873.3832330177. The cubic root of 78736930 is about 428.6072297605.

The spelling of 78736930 in words is "seventy-eight million, seven hundred thirty-six thousand, nine hundred thirty".