78852520 has 16 divisors (see below), whose sum is σ = 177418260. Its totient is φ = 31540992.

The previous prime is 78852509. The next prime is 78852523. The reversal of 78852520 is 2525887.

It can be written as a sum of positive squares in 2 ways, for example, as 64609444 + 14243076 = 8038^2 + 3774^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78852520.

It is not an unprimeable number, because it can be changed into a prime (78852523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 985617 + ... + 985696.

Almost surely, 2^78852520 is an apocalyptic number.

It is an amenable number.

78852520 is an abundant number, since it is smaller than the sum of its proper divisors (98565740).

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

78852520 is a wasteful number, since it uses less digits than its factorization.

78852520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971324 (or 1971320 counting only the distinct ones).

The product of its (nonzero) digits is 44800, while the sum is 37.

The square root of 78852520 is about 8879.8941435132. The cubic root of 78852520 is about 428.8168666093.

The spelling of 78852520 in words is "seventy-eight million, eight hundred fifty-two thousand, five hundred twenty".