78091080 has 32 divisors (see below), whose sum is σ = 234273600. Its totient is φ = 20824256.

The previous prime is 78091067. The next prime is 78091103. The reversal of 78091080 is 8019087.

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, 325260 + ... + 325499.

It is an arithmetic number, because the mean of its divisors is an integer number (7321050).

Almost surely, 2^78091080 is an apocalyptic number.

It is an amenable number.

78091080 is an abundant number, since it is smaller than the sum of its proper divisors (156182520).

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

78091080 is a wasteful number, since it uses less digits than its factorization.

78091080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 650773 (or 650769 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 78091080 is about 8836.9157515504. The cubic root of 78091080 is about 427.4321085033.

The spelling of 78091080 in words is "seventy-eight million, ninety-one thousand, eighty".