22087222 has 8 divisors (see below), whose sum is σ = 34571376. Its totient is φ = 10563432.

The previous prime is 22087207. The next prime is 22087243. The reversal of 22087222 is 22278022.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent 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, 240033 + ... + 240124.

It is an arithmetic number, because the mean of its divisors is an integer number (4321422).

Almost surely, 2^22087222 is an apocalyptic number.

22087222 is a deficient number, since it is larger than the sum of its proper divisors (12484154).

22087222 is a wasteful number, since it uses less digits than its factorization.

22087222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480182.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 22087222 is about 4699.7044587931. The cubic root of 22087222 is about 280.5737470034.

The spelling of 22087222 in words is "twenty-two million, eighty-seven thousand, two hundred twenty-two".