78635252 has 24 divisors (see below), whose sum is σ = 146313216. Its totient is φ = 36896288.

The previous prime is 78635209. The next prime is 78635309. The reversal of 78635252 is 25253687.

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, 3188 + ... + 12939.

It is an arithmetic number, because the mean of its divisors is an integer number (6096384).

Almost surely, 2^78635252 is an apocalyptic number.

It is an amenable number.

78635252 is a deficient number, since it is larger than the sum of its proper divisors (67677964).

78635252 is a wasteful number, since it uses less digits than its factorization.

78635252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16207 (or 16205 counting only the distinct ones).

The product of its digits is 100800, while the sum is 38.

The square root of 78635252 is about 8867.6520003888. The cubic root of 78635252 is about 428.4226543711.

It can be divided in two parts, 78635 and 252, that added together give a palindrome (78887).

The spelling of 78635252 in words is "seventy-eight million, six hundred thirty-five thousand, two hundred fifty-two".