78522260 has 12 divisors (see below), whose sum is σ = 164896788. Its totient is φ = 31408896.

The previous prime is 78522259. The next prime is 78522281. The reversal of 78522260 is 6222587.

It can be written as a sum of positive squares in 2 ways, for example, as 42354064 + 36168196 = 6508^2 + 6014^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1963037 + ... + 1963076.

It is an arithmetic number, because the mean of its divisors is an integer number (13741399).

Almost surely, 2^78522260 is an apocalyptic number.

It is an amenable number.

78522260 is an abundant number, since it is smaller than the sum of its proper divisors (86374528).

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

78522260 is a wasteful number, since it uses less digits than its factorization.

78522260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3926122 (or 3926120 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 32.

The square root of 78522260 is about 8861.2786887672. The cubic root of 78522260 is about 428.2173540084.

The spelling of 78522260 in words is "seventy-eight million, five hundred twenty-two thousand, two hundred sixty".