220828188 has 48 divisors (see below), whose sum is σ = 593143040. Its totient is φ = 62636544.

The previous prime is 220828187. The next prime is 220828199. The reversal of 220828188 is 881828022.

220828188 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220828187) 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, 2220 + ... + 21132.

Almost surely, 2^220828188 is an apocalyptic number.

220828188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 220828188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (296571520).

220828188 is an abundant number, since it is smaller than the sum of its proper divisors (372314852).

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

220828188 is a wasteful number, since it uses less digits than its factorization.

220828188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19066 (or 19064 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 39.

The square root of 220828188 is about 14860.2889608513. The cubic root of 220828188 is about 604.4376424117.

The spelling of 220828188 in words is "two hundred twenty million, eight hundred twenty-eight thousand, one hundred eighty-eight".