628886812 has 6 divisors (see below), whose sum is σ = 1100551928. Its totient is φ = 314443404.

The previous prime is 628886803. The next prime is 628886813. The reversal of 628886812 is 218688826.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628886813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78610848 + ... + 78610855.

Almost surely, 2^628886812 is an apocalyptic number.

It is an amenable number.

628886812 is a deficient number, since it is larger than the sum of its proper divisors (471665116).

628886812 is a wasteful number, since it uses less digits than its factorization.

628886812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157221707 (or 157221705 counting only the distinct ones).

The product of its digits is 589824, while the sum is 49.

The square root of 628886812 is about 25077.6157558888. The cubic root of 628886812 is about 856.7566732752.

The spelling of 628886812 in words is "six hundred twenty-eight million, eight hundred eighty-six thousand, eight hundred twelve".