628747120 has 20 divisors (see below), whose sum is σ = 1461837240. Its totient is φ = 251498816.

The previous prime is 628747079. The next prime is 628747127. The reversal of 628747120 is 21747826.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 628747120.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (628747127) by changing a digit.

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, 3929590 + ... + 3929749.

It is an arithmetic number, because the mean of its divisors is an integer number (73091862).

Almost surely, 2^628747120 is an apocalyptic number.

It is an amenable number.

628747120 is an abundant number, since it is smaller than the sum of its proper divisors (833090120).

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

628747120 is a wasteful number, since it uses less digits than its factorization.

628747120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7859352 (or 7859346 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 628747120 is about 25074.8304082002. The cubic root of 628747120 is about 856.6932326510.

The spelling of 628747120 in words is "six hundred twenty-eight million, seven hundred forty-seven thousand, one hundred twenty".