22385745 has 12 divisors (see below), whose sum is σ = 38802036. Its totient is φ = 11939040.

The previous prime is 22385731. The next prime is 22385761. The reversal of 22385745 is 54758322.

It can be written as a sum of positive squares in 2 ways, for example, as 5419584 + 16966161 = 2328^2 + 4119^2 .

It is not a de Polignac number, because 22385745 - 2⁴ = 22385729 is a prime.

It is a super-2 number, since 2×22385745² = 1002243158410050, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 248686 + ... + 248775.

It is an arithmetic number, because the mean of its divisors is an integer number (3233503).

Almost surely, 2^22385745 is an apocalyptic number.

It is an amenable number.

22385745 is a deficient number, since it is larger than the sum of its proper divisors (16416291).

22385745 is a wasteful number, since it uses less digits than its factorization.

22385745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497472 (or 497469 counting only the distinct ones).

The product of its digits is 67200, while the sum is 36.

The square root of 22385745 is about 4731.3576275737. The cubic root of 22385745 is about 281.8321394248.

The spelling of 22385745 in words is "twenty-two million, three hundred eighty-five thousand, seven hundred forty-five".