22921289 has 8 divisors (see below), whose sum is σ = 23552640. Its totient is φ = 22296016.

The previous prime is 22921267. The next prime is 22921291. The reversal of 22921289 is 98212922.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22921289 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22921889) 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 7 ways as a sum of consecutive naturals, for example, 6722 + ... + 9540.

It is an arithmetic number, because the mean of its divisors is an integer number (2944080).

Almost surely, 2^22921289 is an apocalyptic number.

It is an amenable number.

22921289 is a deficient number, since it is larger than the sum of its proper divisors (631351).

22921289 is a wasteful number, since it uses less digits than its factorization.

22921289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3039.

The product of its digits is 10368, while the sum is 35.

The square root of 22921289 is about 4787.6183014104. The cubic root of 22921289 is about 284.0619161770.

The spelling of 22921289 in words is "twenty-two million, nine hundred twenty-one thousand, two hundred eighty-nine".