220608628 has 12 divisors (see below), whose sum is σ = 391354180. Its totient is φ = 108793152.

The previous prime is 220608623. The next prime is 220608649. The reversal of 220608628 is 826806022.

It can be written as a sum of positive squares in 2 ways, for example, as 63808144 + 156800484 = 7988^2 + 12522^2 .

It is a junction number, because it is equal to n+sod(n) for n = 220608593 and 220608602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220608623) 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 3 ways as a sum of consecutive naturals, for example, 377463 + ... + 378046.

Almost surely, 2^220608628 is an apocalyptic number.

It is an amenable number.

220608628 is a deficient number, since it is larger than the sum of its proper divisors (170745552).

220608628 is a wasteful number, since it uses less digits than its factorization.

220608628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755586 (or 755584 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 220608628 is about 14852.8996495634. The cubic root of 220608628 is about 604.2372538396.

The spelling of 220608628 in words is "two hundred twenty million, six hundred eight thousand, six hundred twenty-eight".