628729944 has 32 divisors (see below), whose sum is σ = 1588035120. Its totient is φ = 207415296.

The previous prime is 628729861. The next prime is 628729963. The reversal of 628729944 is 449927826.

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, 132709 + ... + 137364.

Almost surely, 2^628729944 is an apocalyptic number.

It is an amenable number.

628729944 is an abundant number, since it is smaller than the sum of its proper divisors (959305176).

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

628729944 is a wasteful number, since it uses less digits than its factorization.

628729944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270179 (or 270175 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 51.

The square root of 628729944 is about 25074.4879110222. The cubic root of 628729944 is about 856.6854315831.

The spelling of 628729944 in words is "six hundred twenty-eight million, seven hundred twenty-nine thousand, nine hundred forty-four".