78524152 has 32 divisors (see below), whose sum is σ = 169768800. Its totient is φ = 33352704.

The previous prime is 78524113. The next prime is 78524177. The reversal of 78524152 is 25142587.

It is a happy number.

It is a Smith number, since the sum of its digits (34) coincides with the sum of the digits of its prime factors.

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, 124 + ... + 12532.

It is an arithmetic number, because the mean of its divisors is an integer number (5305275).

Almost surely, 2^78524152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78524152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84884400).

78524152 is an abundant number, since it is smaller than the sum of its proper divisors (91244648).

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

78524152 is a wasteful number, since it uses less digits than its factorization.

78524152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12535 (or 12531 counting only the distinct ones).

The product of its digits is 22400, while the sum is 34.

The square root of 78524152 is about 8861.3854447259. The cubic root of 78524152 is about 428.2207932910.

The spelling of 78524152 in words is "seventy-eight million, five hundred twenty-four thousand, one hundred fifty-two".