628839392 has 12 divisors (see below), whose sum is σ = 1238027616. Its totient is φ = 314419680.

The previous prime is 628839391. The next prime is 628839437. The reversal of 628839392 is 293938826.

It is a self number, because there is not a number n which added to its sum of digits gives 628839392.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628839391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9825584 + ... + 9825647.

It is an arithmetic number, because the mean of its divisors is an integer number (103168968).

Almost surely, 2^628839392 is an apocalyptic number.

It is an amenable number.

628839392 is a deficient number, since it is larger than the sum of its proper divisors (609188224).

628839392 is a wasteful number, since it uses less digits than its factorization.

628839392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19651241 (or 19651233 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 50.

The square root of 628839392 is about 25076.6702733836. The cubic root of 628839392 is about 856.7351387045.

The spelling of 628839392 in words is "six hundred twenty-eight million, eight hundred thirty-nine thousand, three hundred ninety-two".