628022706 has 8 divisors (see below), whose sum is σ = 1256045424. Its totient is φ = 209340900.

The previous prime is 628022693. The next prime is 628022729. The reversal of 628022706 is 607220826.

It is a sphenic number, since it is the product of 3 distinct primes.

628022706 is an admirable number.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52335220 + ... + 52335231.

It is an arithmetic number, because the mean of its divisors is an integer number (157005678).

Almost surely, 2^628022706 is an apocalyptic number.

628022706 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

628022706 is a wasteful number, since it uses less digits than its factorization.

628022706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104670456.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 628022706 is about 25060.3812022084. The cubic root of 628022706 is about 856.3640918104.

The spelling of 628022706 in words is "six hundred twenty-eight million, twenty-two thousand, seven hundred six".