22215360 has 112 divisors (see below), whose sum is σ = 71725536. Its totient is φ = 5824512.

The previous prime is 22215341. The next prime is 22215367. The reversal of 22215360 is 6351222.

It is not an unprimeable number, because it can be changed into a prime (22215367) 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, 69922 + ... + 70238.

Almost surely, 2^22215360 is an apocalyptic number.

22215360 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 22215360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35862768).

22215360 is an abundant number, since it is smaller than the sum of its proper divisors (49510176).

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

22215360 is a wasteful number, since it uses less digits than its factorization.

22215360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410 (or 400 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 22215360 is about 4713.3173031316. The cubic root of 22215360 is about 281.1152796760.

Adding to 22215360 its reverse (6351222), we get a palindrome (28566582).

The spelling of 22215360 in words is "twenty-two million, two hundred fifteen thousand, three hundred sixty".