22220360 has 64 divisors (see below), whose sum is σ = 54295920. Its totient is φ = 8151040.

The previous prime is 22220357. The next prime is 22220371. The reversal of 22220360 is 6302222.

It can be written as a sum of positive squares in 8 ways, for example, as 6522916 + 15697444 = 2554^2 + 3962^2 .

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27482 + ... + 28278.

Almost surely, 2^22220360 is an apocalyptic number.

22220360 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 22220360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27147960).

22220360 is an abundant number, since it is smaller than the sum of its proper divisors (32075560).

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

22220360 is a wasteful number, since it uses less digits than its factorization.

22220360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 866 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 22220360 is about 4713.8476852779. The cubic root of 22220360 is about 281.1363682526.

Adding to 22220360 its reverse (6302222), we get a palindrome (28522582).

The spelling of 22220360 in words is "twenty-two million, two hundred twenty thousand, three hundred sixty".