22190320 has 40 divisors (see below), whose sum is σ = 52112736. Its totient is φ = 8786688.

The previous prime is 22190297. The next prime is 22190351. The reversal of 22190320 is 2309122.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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 7 ways as a sum of consecutive naturals, for example, 6894 + ... + 9586.

Almost surely, 2^22190320 is an apocalyptic number.

22190320 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 22190320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26056368).

22190320 is an abundant number, since it is smaller than the sum of its proper divisors (29922416).

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

22190320 is a wasteful number, since it uses less digits than its factorization.

22190320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2809 (or 2803 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 22190320 is about 4710.6602509627. The cubic root of 22190320 is about 281.0096204539.

Adding to 22190320 its reverse (2309122), we get a palindrome (24499442).

The spelling of 22190320 in words is "twenty-two million, one hundred ninety thousand, three hundred twenty".