78955312 has 20 divisors (see below), whose sum is σ = 153639720. Its totient is φ = 39306368.

The previous prime is 78955243. The next prime is 78955369. The reversal of 78955312 is 21355987.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6862 + ... + 14317.

It is an arithmetic number, because the mean of its divisors is an integer number (7681986).

Almost surely, 2^78955312 is an apocalyptic number.

It is an amenable number.

78955312 is a deficient number, since it is larger than the sum of its proper divisors (74684408).

78955312 is a wasteful number, since it uses less digits than its factorization.

78955312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21420 (or 21414 counting only the distinct ones).

The product of its digits is 75600, while the sum is 40.

The square root of 78955312 is about 8885.6801652997. The cubic root of 78955312 is about 429.0031206587.

The spelling of 78955312 in words is "seventy-eight million, nine hundred fifty-five thousand, three hundred twelve".