628252172 has 12 divisors (see below), whose sum is σ = 1137353280. Its totient is φ = 303294096.

The previous prime is 628252171. The next prime is 628252189. The reversal of 628252172 is 271252826.

It is not an unprimeable number, because it can be changed into a prime (628252171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2707868 + ... + 2708099.

It is an arithmetic number, because the mean of its divisors is an integer number (94779440).

Almost surely, 2^628252172 is an apocalyptic number.

It is an amenable number.

628252172 is a deficient number, since it is larger than the sum of its proper divisors (509101108).

628252172 is a wasteful number, since it uses less digits than its factorization.

628252172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5416000 (or 5415998 counting only the distinct ones).

The product of its digits is 26880, while the sum is 35.

The square root of 628252172 is about 25064.9590464457. The cubic root of 628252172 is about 856.4683781218.

The spelling of 628252172 in words is "six hundred twenty-eight million, two hundred fifty-two thousand, one hundred seventy-two".