78885180 has 72 divisors (see below), whose sum is σ = 261044784. Its totient is φ = 19123200.

The previous prime is 78885167. The next prime is 78885199. The reversal of 78885180 is 8158887.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17941 + ... + 21900.

It is an arithmetic number, because the mean of its divisors is an integer number (3625622).

Almost surely, 2^78885180 is an apocalyptic number.

It is an amenable number.

78885180 is an abundant number, since it is smaller than the sum of its proper divisors (182159604).

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

78885180 is a wasteful number, since it uses less digits than its factorization.

78885180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39867 (or 39862 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 45.

The square root of 78885180 is about 8881.7329390159. The cubic root of 78885180 is about 428.8760624588.

The spelling of 78885180 in words is "seventy-eight million, eight hundred eighty-five thousand, one hundred eighty".