22518822 has 8 divisors (see below), whose sum is σ = 45037656. Its totient is φ = 7506272.

The previous prime is 22518809. The next prime is 22518823. The reversal of 22518822 is 22881522.

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

22518822 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 22518822.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22518823) 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 3 ways as a sum of consecutive naturals, for example, 1876563 + ... + 1876574.

It is an arithmetic number, because the mean of its divisors is an integer number (5629707).

Almost surely, 2^22518822 is an apocalyptic number.

22518822 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

22518822 is a wasteful number, since it uses less digits than its factorization.

22518822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3753142.

The product of its digits is 5120, while the sum is 30.

The square root of 22518822 is about 4745.4000885068. The cubic root of 22518822 is about 282.3895075242.

The spelling of 22518822 in words is "twenty-two million, five hundred eighteen thousand, eight hundred twenty-two".