22285724 has 6 divisors (see below), whose sum is σ = 39000024. Its totient is φ = 11142860.

The previous prime is 22285723. The next prime is 22285733. The reversal of 22285724 is 42758222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22285721) 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, 2785712 + ... + 2785719.

It is an arithmetic number, because the mean of its divisors is an integer number (6500004).

Almost surely, 2^22285724 is an apocalyptic number.

It is an amenable number.

22285724 is a deficient number, since it is larger than the sum of its proper divisors (16714300).

22285724 is a wasteful number, since it uses less digits than its factorization.

22285724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571435 (or 5571433 counting only the distinct ones).

The product of its digits is 17920, while the sum is 32.

The square root of 22285724 is about 4720.7757837034. The cubic root of 22285724 is about 281.4117644557.

The spelling of 22285724 in words is "twenty-two million, two hundred eighty-five thousand, seven hundred twenty-four".