628888630 has 32 divisors (see below), whose sum is σ = 1200119040. Its totient is φ = 236856960.

The previous prime is 628888613. The next prime is 628888639. The reversal of 628888630 is 36888826.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628888639) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15945 + ... + 38884.

It is an arithmetic number, because the mean of its divisors is an integer number (37503720).

Almost surely, 2^628888630 is an apocalyptic number.

628888630 is a deficient number, since it is larger than the sum of its proper divisors (571230410).

628888630 is a wasteful number, since it uses less digits than its factorization.

628888630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54904.

The product of its (nonzero) digits is 884736, while the sum is 49.

The square root of 628888630 is about 25077.6520033276. The cubic root of 628888630 is about 856.7574988515.

The spelling of 628888630 in words is "six hundred twenty-eight million, eight hundred eighty-eight thousand, six hundred thirty".