22591022 has 4 divisors (see below), whose sum is σ = 33886536. Its totient is φ = 11295510.

The previous prime is 22591021. The next prime is 22591027. The reversal of 22591022 is 22019522.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22591021) by changing a digit.

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, 5647754 + ... + 5647757.

It is an arithmetic number, because the mean of its divisors is an integer number (8471634).

Almost surely, 2^22591022 is an apocalyptic number.

22591022 is a deficient number, since it is larger than the sum of its proper divisors (11295514).

22591022 is a wasteful number, since it uses less digits than its factorization.

22591022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11295513.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 22591022 is about 4753.0013675571. The cubic root of 22591022 is about 282.6909852723.

The spelling of 22591022 in words is "twenty-two million, five hundred ninety-one thousand, twenty-two".