22540364 has 36 divisors (see below), whose sum is σ = 49558992. Its totient is φ = 8780640.

The previous prime is 22540361. The next prime is 22540369. The reversal of 22540364 is 46304522.

It is not an unprimeable number, because it can be changed into a prime (22540361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 62 + ... + 6714.

Almost surely, 2^22540364 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22540364, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24779496).

22540364 is an abundant number, since it is smaller than the sum of its proper divisors (27018628).

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

22540364 is a wasteful number, since it uses less digits than its factorization.

22540364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6686 (or 6673 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 22540364 is about 4747.6693229415. The cubic root of 22540364 is about 282.4795254955.

Adding to 22540364 its reverse (46304522), we get a palindrome (68844886).

The spelling of 22540364 in words is "twenty-two million, five hundred forty thousand, three hundred sixty-four".