22189394 has 8 divisors (see below), whose sum is σ = 33304188. Its totient is φ = 11088000.

The previous prime is 22189373. The next prime is 22189423. The reversal of 22189394 is 49398122.

It can be written as a sum of positive squares in 2 ways, for example, as 21114025 + 1075369 = 4595^2 + 1037^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4154 + ... + 7850.

Almost surely, 2^22189394 is an apocalyptic number.

22189394 is a deficient number, since it is larger than the sum of its proper divisors (11114794).

22189394 is a wasteful number, since it uses less digits than its factorization.

22189394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6700.

The product of its digits is 31104, while the sum is 38.

The square root of 22189394 is about 4710.5619622291. The cubic root of 22189394 is about 281.0057115644.

The spelling of 22189394 in words is "twenty-two million, one hundred eighty-nine thousand, three hundred ninety-four".