22223894 has 16 divisors (see below), whose sum is σ = 41561856. Its totient is φ = 8658600.

The previous prime is 22223881. The next prime is 22223899. The reversal of 22223894 is 49832222.

It is a self number, because there is not a number n which added to its sum of digits gives 22223894.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22223899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72002 + ... + 72309.

It is an arithmetic number, because the mean of its divisors is an integer number (2597616).

Almost surely, 2^22223894 is an apocalyptic number.

22223894 is a deficient number, since it is larger than the sum of its proper divisors (19337962).

22223894 is a wasteful number, since it uses less digits than its factorization.

22223894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144331.

The product of its digits is 13824, while the sum is 32.

The square root of 22223894 is about 4714.2225233860. Note that the first 3 decimals coincide. The cubic root of 22223894 is about 281.1512717504.

It can be divided in two parts, 2222 and 3894, that added together give a palindrome (6116).

The spelling of 22223894 in words is "twenty-two million, two hundred twenty-three thousand, eight hundred ninety-four".