22889889 has 48 divisors (see below), whose sum is σ = 38987520. Its totient is φ = 12791520.

The previous prime is 22889887. The next prime is 22889897. The reversal of 22889889 is 98898822.

It is not a de Polignac number, because 22889889 - 2¹ = 22889887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22889887) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 80742 + ... + 81024.

It is an arithmetic number, because the mean of its divisors is an integer number (812240).

Almost surely, 2^22889889 is an apocalyptic number.

It is an amenable number.

22889889 is a deficient number, since it is larger than the sum of its proper divisors (16097631).

22889889 is a wasteful number, since it uses less digits than its factorization.

22889889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362 (or 359 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 54.

The square root of 22889889 is about 4784.3378852251. The cubic root of 22889889 is about 283.9321442396.

The spelling of 22889889 in words is "twenty-two million, eight hundred eighty-nine thousand, eight hundred eighty-nine".