220028000 has 96 divisors (see below), whose sum is σ = 549345888. Its totient is φ = 86592000.

The previous prime is 220027981. The next prime is 220028027. The reversal of 220028000 is 820022.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 267590 + ... + 268410.

It is an arithmetic number, because the mean of its divisors is an integer number (5722353).

Almost surely, 2^220028000 is an apocalyptic number.

220028000 is a gapful number since it is divisible by the number (20) 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 220028000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274672944).

220028000 is an abundant number, since it is smaller than the sum of its proper divisors (329317888).

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

220028000 is an equidigital number, since it uses as much as digits as its factorization.

220028000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 913 (or 895 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 220028000 is about 14833.3408239681. The cubic root of 220028000 is about 603.7066833055.

Adding to 220028000 its reverse (820022), we get a palindrome (220848022).

The spelling of 220028000 in words is "two hundred twenty million, twenty-eight thousand".