78522160 has 20 divisors (see below), whose sum is σ = 182564208. Its totient is φ = 31408832.

The previous prime is 78522151. The next prime is 78522181. The reversal of 78522160 is 6122587.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×78522160² = 12331459222131200, which contains 22 as substring.

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, 490684 + ... + 490843.

Almost surely, 2^78522160 is an apocalyptic number.

It is an amenable number.

78522160 is an abundant number, since it is smaller than the sum of its proper divisors (104042048).

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

78522160 is a wasteful number, since it uses less digits than its factorization.

78522160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 981540 (or 981534 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 78522160 is about 8861.2730462389. The cubic root of 78522160 is about 428.2171722266.

The spelling of 78522160 in words is "seventy-eight million, five hundred twenty-two thousand, one hundred sixty".