220209828 has 24 divisors (see below), whose sum is σ = 514741920. Its totient is φ = 73272000.

The previous prime is 220209779. The next prime is 220209839. The reversal of 220209828 is 828902022.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9298 + ... + 22953.

It is an arithmetic number, because the mean of its divisors is an integer number (21447580).

Almost surely, 2^220209828 is an apocalyptic number.

It is an amenable number.

220209828 is an abundant number, since it is smaller than the sum of its proper divisors (294532092).

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

220209828 is a wasteful number, since it uses less digits than its factorization.

220209828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32827 (or 32825 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 220209828 is about 14839.4685888680. The cubic root of 220209828 is about 603.8729357144.

The spelling of 220209828 in words is "two hundred twenty million, two hundred nine thousand, eight hundred twenty-eight".