22228880 has 40 divisors (see below), whose sum is σ = 52080000. Its totient is φ = 8823168.

The previous prime is 22228873. The next prime is 22228883. The reversal of 22228880 is 8882222.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (22228883) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10121 + ... + 12119.

It is an arithmetic number, because the mean of its divisors is an integer number (1302000).

Almost surely, 2^22228880 is an apocalyptic number.

22228880 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 22228880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26040000).

22228880 is an abundant number, since it is smaller than the sum of its proper divisors (29851120).

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

22228880 is a wasteful number, since it uses less digits than its factorization.

22228880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2151 (or 2145 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 22228880 is about 4714.7513189987. The cubic root of 22228880 is about 281.1722959000.

The spelling of 22228880 in words is "twenty-two million, two hundred twenty-eight thousand, eight hundred eighty".