22268220 has 48 divisors (see below), whose sum is σ = 67149600. Its totient is φ = 5481216.

The previous prime is 22268219. The next prime is 22268221. The reversal of 22268220 is 2286222.

It is an interprime number because it is at equal distance from previous prime (22268219) and next prime (22268221).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22268221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13495 + ... + 15054.

It is an arithmetic number, because the mean of its divisors is an integer number (1398950).

Almost surely, 2^22268220 is an apocalyptic number.

22268220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22268220 is an abundant number, since it is smaller than the sum of its proper divisors (44881380).

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

22268220 is a wasteful number, since it uses less digits than its factorization.

22268220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28574 (or 28572 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 22268220 is about 4718.9214869502. The cubic root of 22268220 is about 281.3380682227.

The spelling of 22268220 in words is "twenty-two million, two hundred sixty-eight thousand, two hundred twenty".