78748086 has 16 divisors (see below), whose sum is σ = 157939200. Its totient is φ = 26175528.

The previous prime is 78748049. The next prime is 78748127. The reversal of 78748086 is 68084787.

It is a super-2 number, since 2×78748086² = 12402522097326792, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

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, 16126 + ... + 20433.

It is an arithmetic number, because the mean of its divisors is an integer number (9871200).

Almost surely, 2^78748086 is an apocalyptic number.

78748086 is an abundant number, since it is smaller than the sum of its proper divisors (79191114).

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

78748086 is a wasteful number, since it uses less digits than its factorization.

78748086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36923.

The product of its (nonzero) digits is 602112, while the sum is 48.

The square root of 78748086 is about 8874.0118323112. The cubic root of 78748086 is about 428.6274714965.

The spelling of 78748086 in words is "seventy-eight million, seven hundred forty-eight thousand, eighty-six".