628191876 has 48 divisors (see below), whose sum is σ = 1588051584. Its totient is φ = 192124416.

The previous prime is 628191833. The next prime is 628191887. The reversal of 628191876 is 678191826.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13996 + ... + 38108.

It is an arithmetic number, because the mean of its divisors is an integer number (33084408).

Almost surely, 2^628191876 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 628191876, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794025792).

628191876 is an abundant number, since it is smaller than the sum of its proper divisors (959859708).

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

628191876 is a wasteful number, since it uses less digits than its factorization.

628191876 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24300 (or 24298 counting only the distinct ones).

The product of its digits is 290304, while the sum is 48.

The square root of 628191876 is about 25063.7562228809. The cubic root of 628191876 is about 856.4409776226.

The spelling of 628191876 in words is "six hundred twenty-eight million, one hundred ninety-one thousand, eight hundred seventy-six".