22240028 has 6 divisors (see below), whose sum is σ = 38920056. Its totient is φ = 11120012.

The previous prime is 22240027. The next prime is 22240037. The reversal of 22240028 is 82004222.

It is a junction number, because it is equal to n+sod(n) for n = 22239991 and 22240009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22240021) 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 as a sum of consecutive naturals, namely, 2780000 + ... + 2780007.

It is an arithmetic number, because the mean of its divisors is an integer number (6486676).

Almost surely, 2^22240028 is an apocalyptic number.

It is an amenable number.

22240028 is a deficient number, since it is larger than the sum of its proper divisors (16680028).

22240028 is a wasteful number, since it uses less digits than its factorization.

22240028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5560011 (or 5560009 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 22240028 is about 4715.9334176810. The cubic root of 22240028 is about 281.2192915937.

The spelling of 22240028 in words is "twenty-two million, two hundred forty thousand, twenty-eight".