22422000 has 160 divisors (see below), whose sum is σ = 74977344. Its totient is φ = 5760000.

The previous prime is 22421983. The next prime is 22422007. The reversal of 22422000 is 22422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a super Niven number, because it is divisible the sum of any subset of its (nonzero) digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22422007) 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 31 ways as a sum of consecutive naturals, for example, 221950 + ... + 222050.

Almost surely, 2^22422000 is an apocalyptic number.

22422000 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 22422000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37488672).

22422000 is an abundant number, since it is smaller than the sum of its proper divisors (52555344).

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

22422000 is a wasteful number, since it uses less digits than its factorization.

22422000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164 (or 148 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 22422000 is about 4735.1874302925. The cubic root of 22422000 is about 281.9842051412.

Adding to 22422000 its reverse (22422), we get a palindrome (22444422).

22422000 divided by its reverse (22422) gives a cube (1000 = 10³).

The spelling of 22422000 in words is "twenty-two million, four hundred twenty-two thousand".