22289905 has 16 divisors (see below), whose sum is σ = 29678400. Its totient is φ = 15933760.

The previous prime is 22289903. The next prime is 22289909. The reversal of 22289905 is 50998222.

It is a happy number.

It is not a de Polignac number, because 22289905 - 2¹ = 22289903 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22289903) 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 15 ways as a sum of consecutive naturals, for example, 190 + ... + 6679.

It is an arithmetic number, because the mean of its divisors is an integer number (1854900).

Almost surely, 2^22289905 is an apocalyptic number.

It is an amenable number.

22289905 is a deficient number, since it is larger than the sum of its proper divisors (7388495).

22289905 is a wasteful number, since it uses less digits than its factorization.

22289905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6944.

The product of its (nonzero) digits is 25920, while the sum is 37.

The square root of 22289905 is about 4721.2185926941. The cubic root of 22289905 is about 281.4293618051.

The spelling of 22289905 in words is "twenty-two million, two hundred eighty-nine thousand, nine hundred five".