78536252 has 6 divisors (see below), whose sum is σ = 137438448. Its totient is φ = 39268124.

The previous prime is 78536239. The next prime is 78536309. The reversal of 78536252 is 25263587.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9817028 + ... + 9817035.

It is an arithmetic number, because the mean of its divisors is an integer number (22906408).

Almost surely, 2^78536252 is an apocalyptic number.

It is an amenable number.

78536252 is a deficient number, since it is larger than the sum of its proper divisors (58902196).

78536252 is a wasteful number, since it uses less digits than its factorization.

78536252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19634067 (or 19634065 counting only the distinct ones).

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

The square root of 78536252 is about 8862.0681559103. The cubic root of 78536252 is about 428.2427873966.

The spelling of 78536252 in words is "seventy-eight million, five hundred thirty-six thousand, two hundred fifty-two".