628619172 has 24 divisors (see below), whose sum is σ = 1497987456. Its totient is φ = 205081248.

The previous prime is 628619153. The next prime is 628619177. The reversal of 628619172 is 271916826.

It is not an unprimeable number, because it can be changed into a prime (628619177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556723 + ... + 557850.

It is an arithmetic number, because the mean of its divisors is an integer number (62416144).

Almost surely, 2^628619172 is an apocalyptic number.

It is an amenable number.

628619172 is an abundant number, since it is smaller than the sum of its proper divisors (869368284).

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

628619172 is a wasteful number, since it uses less digits than its factorization.

628619172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1114627 (or 1114625 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 628619172 is about 25072.2789550531. The cubic root of 628619172 is about 856.6351172771.

The spelling of 628619172 in words is "six hundred twenty-eight million, six hundred nineteen thousand, one hundred seventy-two".