220209628 has 6 divisors (see below), whose sum is σ = 385366856. Its totient is φ = 110104812.

The previous prime is 220209599. The next prime is 220209629. The reversal of 220209628 is 826902022.

It is a self number, because there is not a number n which added to its sum of digits gives 220209628.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220209629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27526200 + ... + 27526207.

Almost surely, 2^220209628 is an apocalyptic number.

It is an amenable number.

220209628 is a deficient number, since it is larger than the sum of its proper divisors (165157228).

220209628 is a wasteful number, since it uses less digits than its factorization.

220209628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55052411 (or 55052409 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 220209628 is about 14839.4618500807. The cubic root of 220209628 is about 603.8727528969.

The spelling of 220209628 in words is "two hundred twenty million, two hundred nine thousand, six hundred twenty-eight".