22288446 has 28 divisors (see below), whose sum is σ = 50129352. Its totient is φ = 7428996.

The previous prime is 22288439. The next prime is 22288447. The reversal of 22288446 is 64488222.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 22288446.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22288447) by changing a digit.

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 13 ways as a sum of consecutive naturals, for example, 6186 + ... + 9101.

It is an arithmetic number, because the mean of its divisors is an integer number (1790334).

Almost surely, 2^22288446 is an apocalyptic number.

22288446 is an abundant number, since it is smaller than the sum of its proper divisors (27840906).

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

22288446 is an equidigital number, since it uses as much as digits as its factorization.

22288446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15307 (or 15292 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 22288446 is about 4721.0640749729. The cubic root of 22288446 is about 281.4232212915.

The spelling of 22288446 in words is "twenty-two million, two hundred eighty-eight thousand, four hundred forty-six".