22226285 has 4 divisors (see below), whose sum is σ = 26671548. Its totient is φ = 17781024.

The previous prime is 22226279. The next prime is 22226297. The reversal of 22226285 is 58262222.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 58262222 = 2 ⋅29131111.

It can be written as a sum of positive squares in 2 ways, for example, as 8305924 + 13920361 = 2882^2 + 3731^2 .

It is a cyclic number.

It is not a de Polignac number, because 22226285 - 2⁶ = 22226221 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 2222624 + ... + 2222633.

It is an arithmetic number, because the mean of its divisors is an integer number (6667887).

Almost surely, 2^22226285 is an apocalyptic number.

It is an amenable number.

22226285 is a deficient number, since it is larger than the sum of its proper divisors (4445263).

22226285 is an equidigital number, since it uses as much as digits as its factorization.

22226285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4445262.

The product of its digits is 7680, while the sum is 29.

The square root of 22226285 is about 4714.4761108738. The cubic root of 22226285 is about 281.1613541207.

The spelling of 22226285 in words is "twenty-two million, two hundred twenty-six thousand, two hundred eighty-five".