22191446 has 4 divisors (see below), whose sum is σ = 33287172. Its totient is φ = 11095722.

The previous prime is 22191427. The next prime is 22191451. The reversal of 22191446 is 64419122.

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

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 as a sum of consecutive naturals, namely, 5547860 + ... + 5547863.

It is an arithmetic number, because the mean of its divisors is an integer number (8321793).

Almost surely, 2^22191446 is an apocalyptic number.

22191446 is a deficient number, since it is larger than the sum of its proper divisors (11095726).

22191446 is a wasteful number, since it uses less digits than its factorization.

22191446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11095725.

The product of its digits is 3456, while the sum is 29.

The square root of 22191446 is about 4710.7797656014. The cubic root of 22191446 is about 281.0143734495.

The spelling of 22191446 in words is "twenty-two million, one hundred ninety-one thousand, four hundred forty-six".