628879924 has 12 divisors (see below), whose sum is σ = 1108458400. Its totient is φ = 312177528.

The previous prime is 628879903. The next prime is 628879931. The reversal of 628879924 is 429978826.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564984 + ... + 566095.

Almost surely, 2^628879924 is an apocalyptic number.

It is an amenable number.

628879924 is a deficient number, since it is larger than the sum of its proper divisors (479578476).

628879924 is a wasteful number, since it uses less digits than its factorization.

628879924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1131222 (or 1131220 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 55.

The square root of 628879924 is about 25077.4784218829. The cubic root of 628879924 is about 856.7535453347.

The spelling of 628879924 in words is "six hundred twenty-eight million, eight hundred seventy-nine thousand, nine hundred twenty-four".