628628090 has 16 divisors (see below), whose sum is σ = 1134570888. Its totient is φ = 250775616.

The previous prime is 628628087. The next prime is 628628173. The reversal of 628628090 is 90826826.

628628090 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 396766561 + 231861529 = 19919^2 + 15227^2 .

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, 80537 + ... + 87996.

Almost surely, 2^628628090 is an apocalyptic number.

628628090 is a deficient number, since it is larger than the sum of its proper divisors (505942798).

628628090 is a wasteful number, since it uses less digits than its factorization.

628628090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168913.

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 628628090 is about 25072.4568002420. The cubic root of 628628090 is about 856.6391681854.

The spelling of 628628090 in words is "six hundred twenty-eight million, six hundred twenty-eight thousand, ninety".