22456689 has 8 divisors (see below), whose sum is σ = 31518240. Its totient is φ = 14183136.

The previous prime is 22456649. The next prime is 22456691. The reversal of 22456689 is 98665422.

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

It is not a de Polignac number, because 22456689 - 2⁸ = 22456433 is a prime.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22456689.

It is not an unprimeable number, because it can be changed into a prime (22456649) 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, 196932 + ... + 197045.

It is an arithmetic number, because the mean of its divisors is an integer number (3939780).

Almost surely, 2^22456689 is an apocalyptic number.

It is an amenable number.

22456689 is a deficient number, since it is larger than the sum of its proper divisors (9061551).

22456689 is a wasteful number, since it uses less digits than its factorization.

22456689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393999.

The product of its digits is 207360, while the sum is 42.

The square root of 22456689 is about 4738.8489108643. The cubic root of 22456689 is about 282.1295491484.

The spelling of 22456689 in words is "twenty-two million, four hundred fifty-six thousand, six hundred eighty-nine".