78522268 has 24 divisors (see below), whose sum is σ = 150580080. Its totient is φ = 35531520.

The previous prime is 78522259. The next prime is 78522281. The reversal of 78522268 is 86222587.

It is a self number, because there is not a number n which added to its sum of digits gives 78522268.

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, 6180 + ... + 13972.

It is an arithmetic number, because the mean of its divisors is an integer number (6274170).

Almost surely, 2^78522268 is an apocalyptic number.

It is an amenable number.

78522268 is a deficient number, since it is larger than the sum of its proper divisors (72057812).

78522268 is a wasteful number, since it uses less digits than its factorization.

78522268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8037 (or 8035 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 78522268 is about 8861.2791401693. The cubic root of 78522268 is about 428.2173685509.

The spelling of 78522268 in words is "seventy-eight million, five hundred twenty-two thousand, two hundred sixty-eight".