628888118 has 4 divisors (see below), whose sum is σ = 943332180. Its totient is φ = 314444058.

The previous prime is 628888033. The next prime is 628888121. The reversal of 628888118 is 811888826.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157222028 + ... + 157222031.

It is an arithmetic number, because the mean of its divisors is an integer number (235833045).

Almost surely, 2^628888118 is an apocalyptic number.

628888118 is a deficient number, since it is larger than the sum of its proper divisors (314444062).

628888118 is a wasteful number, since it uses less digits than its factorization.

628888118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314444061.

The product of its digits is 393216, while the sum is 50.

The square root of 628888118 is about 25077.6417950333. The cubic root of 628888118 is about 856.7572663461.

The spelling of 628888118 in words is "six hundred twenty-eight million, eight hundred eighty-eight thousand, one hundred eighteen".