22332220 has 48 divisors (see below), whose sum is σ = 52284960. Its totient is φ = 7962624.

The previous prime is 22332209. The next prime is 22332221. The reversal of 22332220 is 2223322.

It is a junction number, because it is equal to n+sod(n) for n = 22332194 and 22332203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22332221) 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, 4732 + ... + 8188.

It is an arithmetic number, because the mean of its divisors is an integer number (1089270).

Almost surely, 2^22332220 is an apocalyptic number.

22332220 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 22332220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26142480).

22332220 is an abundant number, since it is smaller than the sum of its proper divisors (29952740).

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

22332220 is a wasteful number, since it uses less digits than its factorization.

22332220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3502 (or 3500 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 16.

The square root of 22332220 is about 4725.6978320667. The cubic root of 22332220 is about 281.6073370753.

Adding to 22332220 its reverse (2223322), we get a palindrome (24555542).

The spelling of 22332220 in words is "twenty-two million, three hundred thirty-two thousand, two hundred twenty".