22042406 has 8 divisors (see below), whose sum is σ = 33090984. Its totient is φ = 11012080.

The previous prime is 22042357. The next prime is 22042429. The reversal of 22042406 is 60424022.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 980 + ... + 6711.

It is an arithmetic number, because the mean of its divisors is an integer number (4136373).

Almost surely, 2^22042406 is an apocalyptic number.

22042406 is a deficient number, since it is larger than the sum of its proper divisors (11048578).

22042406 is a wasteful number, since it uses less digits than its factorization.

22042406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9126.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 22042406 is about 4694.9340783444. The cubic root of 22042406 is about 280.3838527864.

Adding to 22042406 its reverse (60424022), we get a palindrome (82466428).

The spelling of 22042406 in words is "twenty-two million, forty-two thousand, four hundred six".