20228200 has 24 divisors (see below), whose sum is σ = 47031030. Its totient is φ = 8091200.

The previous prime is 20228177. The next prime is 20228203. The reversal of 20228200 is 282202.

It can be written as a sum of positive squares in 3 ways, for example, as 17623204 + 2604996 = 4198^2 + 1614^2 .

It is not an unprimeable number, because it can be changed into a prime (20228203) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 50371 + ... + 50770.

Almost surely, 2^20228200 is an apocalyptic number.

20228200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20228200 is an abundant number, since it is smaller than the sum of its proper divisors (26802830).

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

20228200 is a wasteful number, since it uses less digits than its factorization.

20228200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101157 (or 101148 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 20228200 is about 4497.5771255199. The cubic root of 20228200 is about 272.4702433630.

The spelling of 20228200 in words is "twenty million, two hundred twenty-eight thousand, two hundred".