22440240442 has 8 divisors (see below), whose sum is σ = 34121461716. Its totient is φ = 11066419872.

The previous prime is 22440240419. The next prime is 22440240461. The reversal of 22440240442 is 24404204422.

It can be written as a sum of positive squares in 2 ways, for example, as 20755876761 + 1684363681 = 144069^2 + 41041^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 22440240442.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76849993 + ... + 76850284.

Almost surely, 2^22440240442 is an apocalyptic number.

22440240442 is a deficient number, since it is larger than the sum of its proper divisors (11681221274).

22440240442 is a wasteful number, since it uses less digits than its factorization.

22440240442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153700352.

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 22440240442 its reverse (24404204422), we get a palindrome (46844444864).

The spelling of 22440240442 in words is "twenty-two billion, four hundred forty million, two hundred forty thousand, four hundred forty-two".