22259891 has 8 divisors (see below), whose sum is σ = 23040000. Its totient is φ = 21483720.

The previous prime is 22259873. The next prime is 22259893. The reversal of 22259891 is 19895222.

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

It is a cyclic number.

It is not a de Polignac number, because 22259891 - 2²² = 18065587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22259893) 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 in 7 ways as a sum of consecutive naturals, for example, 14750 + ... + 16188.

It is an arithmetic number, because the mean of its divisors is an integer number (2880000).

Almost surely, 2^22259891 is an apocalyptic number.

22259891 is a deficient number, since it is larger than the sum of its proper divisors (780109).

22259891 is a wasteful number, since it uses less digits than its factorization.

22259891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1969.

The product of its digits is 25920, while the sum is 38.

The square root of 22259891 is about 4718.0388934387. The cubic root of 22259891 is about 281.3029874816.

The spelling of 22259891 in words is "twenty-two million, two hundred fifty-nine thousand, eight hundred ninety-one".