22403242 has 16 divisors (see below), whose sum is σ = 36912960. Its totient is φ = 10150272.

The previous prime is 22403239. The next prime is 22403279. The reversal of 22403242 is 24230422.

It is a super-2 number, since 2×22403242² = 1003810504221128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

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, 11943 + ... + 13690.

It is an arithmetic number, because the mean of its divisors is an integer number (2307060).

Almost surely, 2^22403242 is an apocalyptic number.

22403242 is a deficient number, since it is larger than the sum of its proper divisors (14509718).

22403242 is a wasteful number, since it uses less digits than its factorization.

22403242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25677.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 22403242 is about 4733.2063128497. The cubic root of 22403242 is about 281.9055482352.

Adding to 22403242 its reverse (24230422), we get a palindrome (46633664).

The spelling of 22403242 in words is "twenty-two million, four hundred three thousand, two hundred forty-two".