22005315 has 24 divisors (see below), whose sum is σ = 39076128. Its totient is φ = 11448960.

The previous prime is 22005311. The next prime is 22005317. The reversal of 22005315 is 51350022.

It is a happy number.

It is not a de Polignac number, because 22005315 - 2² = 22005311 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22005311) 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 23 ways as a sum of consecutive naturals, for example, 4119 + ... + 7808.

It is an arithmetic number, because the mean of its divisors is an integer number (1628172).

Almost surely, 2^22005315 is an apocalyptic number.

22005315 is a deficient number, since it is larger than the sum of its proper divisors (17070813).

22005315 is a wasteful number, since it uses less digits than its factorization.

22005315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11979 (or 11976 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 22005315 is about 4690.9823065111. The cubic root of 22005315 is about 280.2264961563.

Adding to 22005315 its reverse (51350022), we get a palindrome (73355337).

The spelling of 22005315 in words is "twenty-two million, five thousand, three hundred fifteen".