22274815 has 4 divisors (see below), whose sum is σ = 26729784. Its totient is φ = 17819848.

The previous prime is 22274809. The next prime is 22274869. The reversal of 22274815 is 51847222.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 22274815 - 2⁷ = 22274687 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2227477 + ... + 2227486.

It is an arithmetic number, because the mean of its divisors is an integer number (6682446).

Almost surely, 2^22274815 is an apocalyptic number.

22274815 is a deficient number, since it is larger than the sum of its proper divisors (4454969).

22274815 is an equidigital number, since it uses as much as digits as its factorization.

22274815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4454968.

The product of its digits is 8960, while the sum is 31.

The square root of 22274815 is about 4719.6202177718. The cubic root of 22274815 is about 281.3658393605.

The spelling of 22274815 in words is "twenty-two million, two hundred seventy-four thousand, eight hundred fifteen".