22442130 has 64 divisors (see below), whose sum is σ = 61269120. Its totient is φ = 5842368.

The previous prime is 22442117. The next prime is 22442149. The reversal of 22442130 is 3124422.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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, 10644 + ... + 12576.

It is an arithmetic number, because the mean of its divisors is an integer number (957330).

Almost surely, 2^22442130 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22442130, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30634560).

22442130 is an abundant number, since it is smaller than the sum of its proper divisors (38826990).

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

22442130 is a wasteful number, since it uses less digits than its factorization.

22442130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1992 (or 1986 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 22442130 is about 4737.3125292723. The cubic root of 22442130 is about 282.0685663965.

Adding to 22442130 its reverse (3124422), we get a palindrome (25566552).

The spelling of 22442130 in words is "twenty-two million, four hundred forty-two thousand, one hundred thirty".