22247844 has 12 divisors (see below), whose sum is σ = 51911664. Its totient is φ = 7415944.

The previous prime is 22247839. The next prime is 22247851. The reversal of 22247844 is 44874222.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 926982 + ... + 927005.

It is an arithmetic number, because the mean of its divisors is an integer number (4325972).

Almost surely, 2^22247844 is an apocalyptic number.

It is an amenable number.

22247844 is an abundant number, since it is smaller than the sum of its proper divisors (29663820).

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

22247844 is a wasteful number, since it uses less digits than its factorization.

22247844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1853994 (or 1853992 counting only the distinct ones).

The product of its digits is 28672, while the sum is 33.

The square root of 22247844 is about 4716.7620249489. The cubic root of 22247844 is about 281.2522314885.

The spelling of 22247844 in words is "twenty-two million, two hundred forty-seven thousand, eight hundred forty-four".