628588172 has 12 divisors (see below), whose sum is σ = 1157925720. Its totient is φ = 297752256.

The previous prime is 628588157. The next prime is 628588223. The reversal of 628588172 is 271885826.

It is a super-3 number, since 3×628588172³ (a number of 27 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4135373 + ... + 4135524.

It is an arithmetic number, because the mean of its divisors is an integer number (96493810).

Almost surely, 2^628588172 is an apocalyptic number.

It is an amenable number.

628588172 is a deficient number, since it is larger than the sum of its proper divisors (529337548).

628588172 is a wasteful number, since it uses less digits than its factorization.

628588172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8270920 (or 8270918 counting only the distinct ones).

The product of its digits is 430080, while the sum is 47.

The square root of 628588172 is about 25071.6607347818. The cubic root of 628588172 is about 856.6210355530.

The spelling of 628588172 in words is "six hundred twenty-eight million, five hundred eighty-eight thousand, one hundred seventy-two".