628888836 has 12 divisors (see below), whose sum is σ = 1467407312. Its totient is φ = 209629608.

The previous prime is 628888753. The next prime is 628888849. The reversal of 628888836 is 638888826.

It is a tau number, because it is divible by the number of its divisors (12).

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, 26203690 + ... + 26203713.

Almost surely, 2^628888836 is an apocalyptic number.

It is an amenable number.

628888836 is an abundant number, since it is smaller than the sum of its proper divisors (838518476).

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

628888836 is a wasteful number, since it uses less digits than its factorization.

628888836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52407410 (or 52407408 counting only the distinct ones).

The product of its digits is 7077888, while the sum is 57.

The square root of 628888836 is about 25077.6561105698. The cubic root of 628888836 is about 856.7575923986.

The spelling of 628888836 in words is "six hundred twenty-eight million, eight hundred eighty-eight thousand, eight hundred thirty-six".