22440522 has 32 divisors (see below), whose sum is σ = 48642048. Its totient is φ = 6860736.

The previous prime is 22440521. The next prime is 22440533. The reversal of 22440522 is 22504422.

It is not an unprimeable number, because it can be changed into a prime (22440521) 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, 12663 + ... + 14325.

It is an arithmetic number, because the mean of its divisors is an integer number (1520064).

Almost surely, 2^22440522 is an apocalyptic number.

22440522 is an abundant number, since it is smaller than the sum of its proper divisors (26201526).

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

22440522 is a wasteful number, since it uses less digits than its factorization.

22440522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 22440522 is about 4737.1428097536. The cubic root of 22440522 is about 282.0618294084.

Adding to 22440522 its reverse (22504422), we get a palindrome (44944944).

The spelling of 22440522 in words is "twenty-two million, four hundred forty thousand, five hundred twenty-two".