220109028 has 48 divisors (see below), whose sum is σ = 522633216. Its totient is φ = 72087840.

The previous prime is 220109027. The next prime is 220109039. The reversal of 220109028 is 820901022.

220109028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 220108989 and 220109007.

It is not an unprimeable number, because it can be changed into a prime (220109027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221613 + ... + 222603.

It is an arithmetic number, because the mean of its divisors is an integer number (10888192).

Almost surely, 2^220109028 is an apocalyptic number.

It is an amenable number.

220109028 is an abundant number, since it is smaller than the sum of its proper divisors (302524188).

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

220109028 is a wasteful number, since it uses less digits than its factorization.

220109028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1304 (or 1302 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 220109028 is about 14836.0718520773. The cubic root of 220109028 is about 603.7807816651.

The spelling of 220109028 in words is "two hundred twenty million, one hundred nine thousand, twenty-eight".