628117880 has 32 divisors (see below), whose sum is σ = 1521979200. Its totient is φ = 231920256.

The previous prime is 628117859. The next prime is 628117891. The reversal of 628117880 is 88711826.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 603440 + ... + 604479.

It is an arithmetic number, because the mean of its divisors is an integer number (47561850).

Almost surely, 2^628117880 is an apocalyptic number.

It is an amenable number.

628117880 is an abundant number, since it is smaller than the sum of its proper divisors (893861320).

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

628117880 is a wasteful number, since it uses less digits than its factorization.

628117880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207943 (or 1207939 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 41.

The square root of 628117880 is about 25062.2800239723. The cubic root of 628117880 is about 856.4073489933.

The spelling of 628117880 in words is "six hundred twenty-eight million, one hundred seventeen thousand, eight hundred eighty".