22115894 has 8 divisors (see below), whose sum is σ = 33316920. Its totient is φ = 11010256.

The previous prime is 22115887. The next prime is 22115911. The reversal of 22115894 is 49851122.

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

It is a super-2 number, since 2×22115894² = 978225534838472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 22115894.

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, 23264 + ... + 24195.

It is an arithmetic number, because the mean of its divisors is an integer number (4164615).

Almost surely, 2^22115894 is an apocalyptic number.

22115894 is a deficient number, since it is larger than the sum of its proper divisors (11201026).

22115894 is a wasteful number, since it uses less digits than its factorization.

22115894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47694.

The product of its digits is 5760, while the sum is 32.

The square root of 22115894 is about 4702.7538740615. The cubic root of 22115894 is about 280.6951012116.

The spelling of 22115894 in words is "twenty-two million, one hundred fifteen thousand, eight hundred ninety-four".