78625424 has 20 divisors (see below), whose sum is σ = 157251840. Its totient is φ = 38044320.

The previous prime is 78625423. The next prime is 78625427. The reversal of 78625424 is 42452687.

78625424 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (78625423) 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, 78764 + ... + 79755.

It is an arithmetic number, because the mean of its divisors is an integer number (7862592).

Almost surely, 2^78625424 is an apocalyptic number.

It is an amenable number.

78625424 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

78625424 is a wasteful number, since it uses less digits than its factorization.

78625424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158558 (or 158552 counting only the distinct ones).

The product of its digits is 107520, while the sum is 38.

The square root of 78625424 is about 8867.0978341281. The cubic root of 78625424 is about 428.4048052379.

The spelling of 78625424 in words is "seventy-eight million, six hundred twenty-five thousand, four hundred twenty-four".