78715086 has 32 divisors (see below), whose sum is σ = 160963200. Its totient is φ = 25654560.

The previous prime is 78715037. The next prime is 78715103. The reversal of 78715086 is 68051787.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80581 + ... + 81551.

It is an arithmetic number, because the mean of its divisors is an integer number (5030100).

Almost surely, 2^78715086 is an apocalyptic number.

78715086 is an abundant number, since it is smaller than the sum of its proper divisors (82248114).

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

78715086 is a wasteful number, since it uses less digits than its factorization.

78715086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1264.

The product of its (nonzero) digits is 94080, while the sum is 42.

The square root of 78715086 is about 8872.1522755192. The cubic root of 78715086 is about 428.5675899021.

The spelling of 78715086 in words is "seventy-eight million, seven hundred fifteen thousand, eighty-six".