628806992 has 40 divisors (see below), whose sum is σ = 1340098752. Its totient is φ = 285811680.

The previous prime is 628806979. The next prime is 628807009. The reversal of 628806992 is 299608826.

628806992 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 628806992.

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, 6533 + ... + 36059.

Almost surely, 2^628806992 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 628806992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (670049376).

628806992 is an abundant number, since it is smaller than the sum of its proper divisors (711291760).

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

628806992 is a wasteful number, since it uses less digits than its factorization.

628806992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29568 (or 29540 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 628806992 is about 25076.0242462796. The cubic root of 628806992 is about 856.7204244570.

The spelling of 628806992 in words is "six hundred twenty-eight million, eight hundred six thousand, nine hundred ninety-two".