392742624 has 24 divisors (see below), whose sum is σ = 1030949640. Its totient is φ = 130914176.

The previous prime is 392742617. The next prime is 392742629. The reversal of 392742624 is 426247293.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392742629) 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, 2045439 + ... + 2045630.

It is an arithmetic number, because the mean of its divisors is an integer number (42956235).

Almost surely, 2^392742624 is an apocalyptic number.

It is an amenable number.

392742624 is an abundant number, since it is smaller than the sum of its proper divisors (638207016).

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

392742624 is a wasteful number, since it uses less digits than its factorization.

392742624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091082 (or 4091074 counting only the distinct ones).

The product of its digits is 145152, while the sum is 39.

The square root of 392742624 is about 19817.7350875422. The cubic root of 392742624 is about 732.3230083311.

The spelling of 392742624 in words is "three hundred ninety-two million, seven hundred forty-two thousand, six hundred twenty-four".