628709230 has 16 divisors (see below), whose sum is σ = 1145312784. Its totient is φ = 248453440.

The previous prime is 628709131. The next prime is 628709243. The reversal of 628709230 is 32907826.

It is a self number, because there is not a number n which added to its sum of digits gives 628709230.

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, 377911 + ... + 379570.

It is an arithmetic number, because the mean of its divisors is an integer number (71582049).

Almost surely, 2^628709230 is an apocalyptic number.

628709230 is a deficient number, since it is larger than the sum of its proper divisors (516603554).

628709230 is a wasteful number, since it uses less digits than its factorization.

628709230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 757571.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 628709230 is about 25074.0748583073. The cubic root of 628709230 is about 856.6760234224.

The spelling of 628709230 in words is "six hundred twenty-eight million, seven hundred nine thousand, two hundred thirty".