22190860 has 48 divisors (see below), whose sum is σ = 51206400. Its totient is φ = 8040384.

The previous prime is 22190821. The next prime is 22190893. The reversal of 22190860 is 6809122.

It is a happy 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 15 ways as a sum of consecutive naturals, for example, 7471 + ... + 10009.

It is an arithmetic number, because the mean of its divisors is an integer number (1066800).

Almost surely, 2^22190860 is an apocalyptic number.

22190860 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 22190860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25603200).

22190860 is an abundant number, since it is smaller than the sum of its proper divisors (29015540).

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

22190860 is a wasteful number, since it uses less digits than its factorization.

22190860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2590 (or 2588 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 22190860 is about 4710.7175674201. The cubic root of 22190860 is about 281.0118998857.

Adding to 22190860 its reverse (6809122), we get a palindrome (28999982).

The spelling of 22190860 in words is "twenty-two million, one hundred ninety thousand, eight hundred sixty".