22229900 has 72 divisors (see below), whose sum is σ = 60162816. Its totient is φ = 6926400.

The previous prime is 22229873. The next prime is 22229903. The reversal of 22229900 is 992222.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22229900.

It is not an unprimeable number, because it can be changed into a prime (22229903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6257 + ... + 9143.

Almost surely, 2^22229900 is an apocalyptic number.

22229900 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 22229900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30081408).

22229900 is an abundant number, since it is smaller than the sum of its proper divisors (37932916).

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

22229900 is a wasteful number, since it uses less digits than its factorization.

22229900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2919 (or 2912 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 22229900 is about 4714.8594888925. The cubic root of 22229900 is about 281.1765964819.

It can be divided in two parts, 22 and 229900, that added together give a palindrome (229922).

The spelling of 22229900 in words is "twenty-two million, two hundred twenty-nine thousand, nine hundred".