78885880 has 16 divisors (see below), whose sum is σ = 177493320. Its totient is φ = 31554336.

The previous prime is 78885869. The next prime is 78885907. The reversal of 78885880 is 8858887.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 986034 + ... + 986113.

Almost surely, 2^78885880 is an apocalyptic number.

It is an amenable number.

78885880 is an abundant number, since it is smaller than the sum of its proper divisors (98607440).

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

78885880 is a wasteful number, since it uses less digits than its factorization.

78885880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972158 (or 1972154 counting only the distinct ones).

The product of its (nonzero) digits is 1146880, while the sum is 52.

The square root of 78885880 is about 8881.7723456526. The cubic root of 78885880 is about 428.8773310213.

It can be divided in two parts, 788 and 85880, that added together give a palindrome (86668).

The spelling of 78885880 in words is "seventy-eight million, eight hundred eighty-five thousand, eight hundred eighty".