78925824 has 78 divisors (see below), whose sum is σ = 228086586. Its totient is φ = 26296320.

The previous prime is 78925817. The next prime is 78925841. The reversal of 78925824 is 42852987.

It can be written as a sum of positive squares in only one way, i.e., 78004224 + 921600 = 8832^2 + 960^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 78925824.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35794 + ... + 37934.

It is an arithmetic number, because the mean of its divisors is an integer number (2924187).

Almost surely, 2^78925824 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 78925824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114043293).

78925824 is an abundant number, since it is smaller than the sum of its proper divisors (149160762).

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

78925824 is a wasteful number, since it uses less digits than its factorization.

78925824 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2171 (or 2146 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 78925824 is about 8884.0207113671. The cubic root of 78925824 is about 428.9497063965.

The spelling of 78925824 in words is "seventy-eight million, nine hundred twenty-five thousand, eight hundred twenty-four".