22205190 has 64 divisors (see below), whose sum is σ = 62415360. Its totient is φ = 4949760.

The previous prime is 22205177. The next prime is 22205201. The reversal of 22205190 is 9150222.

It is a super-2 number, since 2×22205190² = 986140925872200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

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, 7321 + ... + 9899.

It is an arithmetic number, because the mean of its divisors is an integer number (975240).

Almost surely, 2^22205190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22205190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31207680).

22205190 is an abundant number, since it is smaller than the sum of its proper divisors (40210170).

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

22205190 is a wasteful number, since it uses less digits than its factorization.

22205190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2637.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 22205190 is about 4712.2383216472. The cubic root of 22205190 is about 281.0723757457.

The spelling of 22205190 in words is "twenty-two million, two hundred five thousand, one hundred ninety".