22447012 has 48 divisors (see below), whose sum is σ = 47190528. Its totient is φ = 9141120.

The previous prime is 22446997. The next prime is 22447013. The reversal of 22447012 is 21074422.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (22447013) 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 in 15 ways as a sum of consecutive naturals, for example, 48462 + ... + 48922.

It is an arithmetic number, because the mean of its divisors is an integer number (983136).

Almost surely, 2^22447012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22447012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23595264).

22447012 is an abundant number, since it is smaller than the sum of its proper divisors (24743516).

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

22447012 is a wasteful number, since it uses less digits than its factorization.

22447012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556 (or 554 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 22447012 is about 4737.8277723024. The cubic root of 22447012 is about 282.0890183901.

The spelling of 22447012 in words is "twenty-two million, four hundred forty-seven thousand, twelve".