628127668 has 48 divisors (see below), whose sum is σ = 1288268800. Its totient is φ = 267859872.

The previous prime is 628127653. The next prime is 628127701. The reversal of 628127668 is 866721826.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 304930 + ... + 306982.

Almost surely, 2^628127668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 628127668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (644134400).

628127668 is an abundant number, since it is smaller than the sum of its proper divisors (660141132).

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

628127668 is a wasteful number, since it uses less digits than its factorization.

628127668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2301 (or 2285 counting only the distinct ones).

The product of its digits is 387072, while the sum is 46.

The square root of 628127668 is about 25062.4752967459. The cubic root of 628127668 is about 856.4117974532.

The spelling of 628127668 in words is "six hundred twenty-eight million, one hundred twenty-seven thousand, six hundred sixty-eight".