22240004 has 6 divisors (see below), whose sum is σ = 38920014. Its totient is φ = 11120000.

The previous prime is 22240003. The next prime is 22240021. The reversal of 22240004 is 40004222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16000000 + 6240004 = 4000^2 + 2498^2 .

It is not an unprimeable number, because it can be changed into a prime (22240003) by changing a digit.

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 as a sum of consecutive naturals, namely, 2779997 + ... + 2780004.

It is an arithmetic number, because the mean of its divisors is an integer number (6486669).

Almost surely, 2^22240004 is an apocalyptic number.

It is an amenable number.

22240004 is a deficient number, since it is larger than the sum of its proper divisors (16680010).

22240004 is a wasteful number, since it uses less digits than its factorization.

22240004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5560005 (or 5560003 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 22240004 is about 4715.9308731151. The cubic root of 22240004 is about 281.2191904358.

Adding to 22240004 its reverse (40004222), we get a palindrome (62244226).

It can be divided in two parts, 222 and 40004, that multiplied together give a palindrome (8880888).

The spelling of 22240004 in words is "twenty-two million, two hundred forty thousand, four".