22228807 has 4 divisors (see below), whose sum is σ = 22745800. Its totient is φ = 21711816.

The previous prime is 22228793. The next prime is 22228813. The reversal of 22228807 is 70882222.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70882222 = 2 ⋅35441111.

It is a cyclic number.

It is not a de Polignac number, because 22228807 - 2¹⁵ = 22196039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22228837) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258432 + ... + 258517.

It is an arithmetic number, because the mean of its divisors is an integer number (5686450).

Almost surely, 2^22228807 is an apocalyptic number.

22228807 is a deficient number, since it is larger than the sum of its proper divisors (516993).

22228807 is an equidigital number, since it uses as much as digits as its factorization.

22228807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516992.

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 22228807 is about 4714.7435773327. The cubic root of 22228807 is about 281.1719881083.

The spelling of 22228807 in words is "twenty-two million, two hundred twenty-eight thousand, eight hundred seven".