628906430 has 16 divisors (see below), whose sum is σ = 1134740880. Its totient is φ = 250960512.

The previous prime is 628906417. The next prime is 628906459. The reversal of 628906430 is 34609826.

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, 70859 + ... + 79238.

It is an arithmetic number, because the mean of its divisors is an integer number (70921305).

Almost surely, 2^628906430 is an apocalyptic number.

628906430 is a deficient number, since it is larger than the sum of its proper divisors (505834450).

628906430 is a wasteful number, since it uses less digits than its factorization.

628906430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150523.

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 628906430 is about 25078.0068984758. The cubic root of 628906430 is about 856.7655819677.

The spelling of 628906430 in words is "six hundred twenty-eight million, nine hundred six thousand, four hundred thirty".