22240434 has 16 divisors (see below), whose sum is σ = 44875872. Its totient is φ = 7347648.

The previous prime is 22240433. The next prime is 22240457. The reversal of 22240434 is 43404222.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 22240434.

It is not an unprimeable number, because it can be changed into a prime (22240433) by changing a digit.

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, 15724 + ... + 17079.

It is an arithmetic number, because the mean of its divisors is an integer number (2804742).

Almost surely, 2^22240434 is an apocalyptic number.

22240434 is an abundant number, since it is smaller than the sum of its proper divisors (22635438).

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

22240434 is a wasteful number, since it uses less digits than its factorization.

22240434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32921.

The product of its (nonzero) digits is 1536, while the sum is 21.

The square root of 22240434 is about 4715.9764630456. The cubic root of 22240434 is about 281.2210028376.

Adding to 22240434 its reverse (43404222), we get a palindrome (65644656).

The spelling of 22240434 in words is "twenty-two million, two hundred forty thousand, four hundred thirty-four".