22222442 has 16 divisors (see below), whose sum is σ = 36592992. Its totient is φ = 10037520.

The previous prime is 22222433. The next prime is 22222471. The reversal of 22222442 is 24422222.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 488 + ... + 6684.

It is an arithmetic number, because the mean of its divisors is an integer number (2287062).

Almost surely, 2^22222442 is an apocalyptic number.

22222442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

22222442 is a deficient number, since it is larger than the sum of its proper divisors (14370550).

22222442 is a wasteful number, since it uses less digits than its factorization.

22222442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6373.

The product of its digits is 1024, while the sum is 20.

The square root of 22222442 is about 4714.0685188062. The cubic root of 22222442 is about 281.1451486030.

Adding to 22222442 its reverse (24422222), we get a palindrome (46644664).

It can be divided in two parts, 2222 and 2442, that added together give a palindrome (4664).

The spelling of 22222442 in words is "twenty-two million, two hundred twenty-two thousand, four hundred forty-two".