22190520 has 64 divisors (see below), whose sum is σ = 72627840. Its totient is φ = 5379200.

The previous prime is 22190503. The next prime is 22190521. The reversal of 22190520 is 2509122.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22190521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7086 + ... + 9725.

It is an arithmetic number, because the mean of its divisors is an integer number (1134810).

Almost surely, 2^22190520 is an apocalyptic number.

22190520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22190520 is an abundant number, since it is smaller than the sum of its proper divisors (50437320).

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

22190520 is a wasteful number, since it uses less digits than its factorization.

22190520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16836 (or 16832 counting only the distinct ones).

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

The square root of 22190520 is about 4710.6814793616. The cubic root of 22190520 is about 281.0104646922.

Adding to 22190520 its reverse (2509122), we get a palindrome (24699642).

The spelling of 22190520 in words is "twenty-two million, one hundred ninety thousand, five hundred twenty".