78855884 has 12 divisors (see below), whose sum is σ = 138062400. Its totient is φ = 39409488.

The previous prime is 78855883. The next prime is 78855913. The reversal of 78855884 is 48855887.

It is not an unprimeable number, because it can be changed into a prime (78855883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10502 + ... + 16370.

It is an arithmetic number, because the mean of its divisors is an integer number (11505200).

Almost surely, 2^78855884 is an apocalyptic number.

It is an amenable number.

78855884 is a deficient number, since it is larger than the sum of its proper divisors (59206516).

78855884 is a wasteful number, since it uses less digits than its factorization.

78855884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9232 (or 9230 counting only the distinct ones).

The product of its digits is 2867200, while the sum is 53.

The square root of 78855884 is about 8880.0835581654. The cubic root of 78855884 is about 428.8229645731.

The spelling of 78855884 in words is "seventy-eight million, eight hundred fifty-five thousand, eight hundred eighty-four".