22540022 has 8 divisors (see below), whose sum is σ = 33836400. Its totient is φ = 11261224.

The previous prime is 22540009. The next prime is 22540027. The reversal of 22540022 is 22004522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22540027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 497 + ... + 6732.

It is an arithmetic number, because the mean of its divisors is an integer number (4229550).

Almost surely, 2^22540022 is an apocalyptic number.

22540022 is a deficient number, since it is larger than the sum of its proper divisors (11296378).

22540022 is a wasteful number, since it uses less digits than its factorization.

22540022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8790.

The product of its (nonzero) digits is 320, while the sum is 17.

The square root of 22540022 is about 4747.6333051321. The cubic root of 22540022 is about 282.4780968217.

Adding to 22540022 its reverse (22004522), we get a palindrome (44544544).

The spelling of 22540022 in words is "twenty-two million, five hundred forty thousand, twenty-two".