22445012 has 6 divisors (see below), whose sum is σ = 39278778. Its totient is φ = 11222504.

The previous prime is 22444993. The next prime is 22445021. The reversal of 22445012 is 21054422.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 18267076 + 4177936 = 4274^2 + 2044^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2805623 + ... + 2805630.

It is an arithmetic number, because the mean of its divisors is an integer number (6546463).

Almost surely, 2^22445012 is an apocalyptic number.

It is an amenable number.

22445012 is a deficient number, since it is larger than the sum of its proper divisors (16833766).

22445012 is a wasteful number, since it uses less digits than its factorization.

22445012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5611257 (or 5611255 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 22445012 is about 4737.6167004096. The cubic root of 22445012 is about 282.0806402179.

Adding to 22445012 its reverse (21054422), we get a palindrome (43499434).

The spelling of 22445012 in words is "twenty-two million, four hundred forty-five thousand, twelve".