628659226 has 16 divisors (see below), whose sum is σ = 1039145184. Its totient is φ = 283402224.

The previous prime is 628659223. The next prime is 628659233. The reversal of 628659226 is 622956826.

It is not an unprimeable number, because it can be changed into a prime (628659221) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 280036 + ... + 282271.

It is an arithmetic number, because the mean of its divisors is an integer number (64946574).

Almost surely, 2^628659226 is an apocalyptic number.

628659226 is a deficient number, since it is larger than the sum of its proper divisors (410485958).

628659226 is a wasteful number, since it uses less digits than its factorization.

628659226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562365.

The product of its digits is 622080, while the sum is 46.

The square root of 628659226 is about 25073.0777129574. The cubic root of 628659226 is about 856.6533110876.

The spelling of 628659226 in words is "six hundred twenty-eight million, six hundred fifty-nine thousand, two hundred twenty-six".