628193226 has 16 divisors (see below), whose sum is σ = 1287030528. Its totient is φ = 204290400.

The previous prime is 628193221. The next prime is 628193249. The reversal of 628193226 is 622391826.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (628193221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276570 + ... + 1277061.

It is an arithmetic number, because the mean of its divisors is an integer number (80439408).

Almost surely, 2^628193226 is an apocalyptic number.

628193226 is an abundant number, since it is smaller than the sum of its proper divisors (658837302).

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

628193226 is a wasteful number, since it uses less digits than its factorization.

628193226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2553677.

The product of its digits is 62208, while the sum is 39.

The square root of 628193226 is about 25063.7831541848. The cubic root of 628193226 is about 856.4415911265.

The spelling of 628193226 in words is "six hundred twenty-eight million, one hundred ninety-three thousand, two hundred twenty-six".