22442442 has 16 divisors (see below), whose sum is σ = 48965472. Its totient is φ = 6800720.

The previous prime is 22442423. The next prime is 22442467. The reversal of 22442442 is 24424422.

It is a Smith number, since the sum of its digits (24) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 169953 + ... + 170084.

It is an arithmetic number, because the mean of its divisors is an integer number (3060342).

Almost surely, 2^22442442 is an apocalyptic number.

22442442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22442442 is an abundant number, since it is smaller than the sum of its proper divisors (26523030).

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

22442442 is a wasteful number, since it uses less digits than its factorization.

22442442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340053.

The product of its digits is 4096, while the sum is 24.

The square root of 22442442 is about 4737.3454592208. The cubic root of 22442442 is about 282.0698735360.

Adding to 22442442 its reverse (24424422), we get a palindrome (46866864).

It can be divided in two parts, 2 and 2442442, that multiplied together give a palindrome (4884884).

The spelling of 22442442 in words is "twenty-two million, four hundred forty-two thousand, four hundred forty-two".