22224280 has 64 divisors (see below), whose sum is σ = 54633600. Its totient is φ = 8087040.

The previous prime is 22224269. The next prime is 22224283. The reversal of 22224280 is 8242222.

It is a happy number.

It is a zygodrome in base 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22224283) 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, 40810 + ... + 41350.

It is an arithmetic number, because the mean of its divisors is an integer number (853650).

Almost surely, 2^22224280 is an apocalyptic number.

22224280 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 22224280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27316800).

22224280 is an abundant number, since it is smaller than the sum of its proper divisors (32409320).

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

22224280 is a wasteful number, since it uses less digits than its factorization.

22224280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 640 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 22.

The square root of 22224280 is about 4714.2634631510. The cubic root of 22224280 is about 281.1528994844.

The spelling of 22224280 in words is "twenty-two million, two hundred twenty-four thousand, two hundred eighty".