20022200 has 96 divisors (see below), whose sum is σ = 53568000. Its totient is φ = 6883200.

The previous prime is 20022199. The next prime is 20022203. The reversal of 20022200 is 222002.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20022203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 41561 + ... + 42039.

It is an arithmetic number, because the mean of its divisors is an integer number (558000).

Almost surely, 2^20022200 is an apocalyptic number.

20022200 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 20022200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26784000).

20022200 is an abundant number, since it is smaller than the sum of its proper divisors (33545800).

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

20022200 is a wasteful number, since it uses less digits than its factorization.

20022200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 8.

The square root of 20022200 is about 4474.6173020718. The cubic root of 20022200 is about 271.5421579738.

Adding to 20022200 its reverse (222002), we get a palindrome (20244202).

The spelling of 20022200 in words is "twenty million, twenty-two thousand, two hundred".