22646889 has 12 divisors (see below), whose sum is σ = 32756100. Its totient is φ = 15077664.

The previous prime is 22646843. The next prime is 22646891. The reversal of 22646889 is 98864622.

It can be written as a sum of positive squares in 2 ways, for example, as 632025 + 22014864 = 795^2 + 4692^2 .

It is not a de Polignac number, because 22646889 - 2⁷ = 22646761 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22646989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8847 + ... + 11115.

It is an arithmetic number, because the mean of its divisors is an integer number (2729675).

Almost surely, 2^22646889 is an apocalyptic number.

It is an amenable number.

22646889 is a deficient number, since it is larger than the sum of its proper divisors (10109211).

22646889 is a wasteful number, since it uses less digits than its factorization.

22646889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3384 (or 3381 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 22646889 is about 4758.8747619579. The cubic root of 22646889 is about 282.9238225545.

The spelling of 22646889 in words is "twenty-two million, six hundred forty-six thousand, eight hundred eighty-nine".