22730185 has 4 divisors (see below), whose sum is σ = 27276228. Its totient is φ = 18184144.

The previous prime is 22730177. The next prime is 22730209. The reversal of 22730185 is 58103722.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2471184 + 20259001 = 1572^2 + 4501^2 .

It is a cyclic number.

It is not a de Polignac number, because 22730185 - 2³ = 22730177 is a prime.

It is a super-2 number, since 2×22730185² = 1033322620268450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2273014 + ... + 2273023.

It is an arithmetic number, because the mean of its divisors is an integer number (6819057).

Almost surely, 2^22730185 is an apocalyptic number.

It is an amenable number.

22730185 is a deficient number, since it is larger than the sum of its proper divisors (4546043).

22730185 is an equidigital number, since it uses as much as digits as its factorization.

22730185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546042.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 22730185 is about 4767.6183781842. The cubic root of 22730185 is about 283.2702658551.

The spelling of 22730185 in words is "twenty-two million, seven hundred thirty thousand, one hundred eighty-five".