78885120 has 72 divisors (see below), whose sum is σ = 251951616. Its totient is φ = 21035008.

The previous prime is 78885097. The next prime is 78885137. The reversal of 78885120 is 2158887.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6432 + ... + 14111.

It is an arithmetic number, because the mean of its divisors is an integer number (3499328).

Almost surely, 2^78885120 is an apocalyptic number.

It is an amenable number.

78885120 is an abundant number, since it is smaller than the sum of its proper divisors (173066496).

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

78885120 is a wasteful number, since it uses less digits than its factorization.

78885120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20567 (or 20553 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 78885120 is about 8881.7295612960. The cubic root of 78885120 is about 428.8759537245.

The spelling of 78885120 in words is "seventy-eight million, eight hundred eighty-five thousand, one hundred twenty".