22652220 has 24 divisors (see below), whose sum is σ = 63426384. Its totient is φ = 6040576.

The previous prime is 22652209. The next prime is 22652233. The reversal of 22652220 is 2225622.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 188709 + ... + 188828.

It is an arithmetic number, because the mean of its divisors is an integer number (2642766).

Almost surely, 2^22652220 is an apocalyptic number.

22652220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22652220 is an abundant number, since it is smaller than the sum of its proper divisors (40774164).

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

22652220 is a wasteful number, since it uses less digits than its factorization.

22652220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377549 (or 377547 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 22652220 is about 4759.4348403986. The cubic root of 22652220 is about 282.9460205786.

Adding to 22652220 its reverse (2225622), we get a palindrome (24877842).

The spelling of 22652220 in words is "twenty-two million, six hundred fifty-two thousand, two hundred twenty".