20222900 has 36 divisors (see below), whose sum is σ = 44913792. Its totient is φ = 7899360.

The previous prime is 20222887. The next prime is 20222933. The reversal of 20222900 is 922202.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1949 + ... + 6651.

Almost surely, 2^20222900 is an apocalyptic number.

20222900 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 20222900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22456896).

20222900 is an abundant number, since it is smaller than the sum of its proper divisors (24690892).

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

20222900 is a wasteful number, since it uses less digits than its factorization.

20222900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4760 (or 4753 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20222900 is about 4496.9878807931. The cubic root of 20222900 is about 272.4464445997.

The spelling of 20222900 in words is "twenty million, two hundred twenty-two thousand, nine hundred".