22240091 has 4 divisors (see below), whose sum is σ = 22250184. Its totient is φ = 22230000.

The previous prime is 22240087. The next prime is 22240093. The reversal of 22240091 is 19004222.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 22240091 - 2² = 22240087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22240093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 170 + ... + 6671.

It is an arithmetic number, because the mean of its divisors is an integer number (5562546).

Almost surely, 2^22240091 is an apocalyptic number.

22240091 is a deficient number, since it is larger than the sum of its proper divisors (10093).

22240091 is an equidigital number, since it uses as much as digits as its factorization.

22240091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10092.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 22240091 is about 4715.9400971598. The cubic root of 22240091 is about 281.2195571329.

The spelling of 22240091 in words is "twenty-two million, two hundred forty thousand, ninety-one".