628542226 has 16 divisors (see below), whose sum is σ = 1018180800. Its totient is φ = 289284048.

The previous prime is 628542221. The next prime is 628542247. The reversal of 628542226 is 622245826.

It is a happy number.

628542226 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (628542221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24336 + ... + 43003.

It is an arithmetic number, because the mean of its divisors is an integer number (63636300).

Almost surely, 2^628542226 is an apocalyptic number.

628542226 is a deficient number, since it is larger than the sum of its proper divisors (389638574).

628542226 is a wasteful number, since it uses less digits than its factorization.

628542226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67713.

The product of its digits is 92160, while the sum is 37.

The square root of 628542226 is about 25070.7444245280. The cubic root of 628542226 is about 856.6001637693.

The spelling of 628542226 in words is "six hundred twenty-eight million, five hundred forty-two thousand, two hundred twenty-six".