22405313 has 32 divisors (see below), whose sum is σ = 28819200. Its totient is φ = 16982784.

The previous prime is 22405307. The next prime is 22405321. The reversal of 22405313 is 31350422.

It is a happy number.

It is not a de Polignac number, because 22405313 - 2⁶ = 22405249 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22405333) 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 31 ways as a sum of consecutive naturals, for example, 142631 + ... + 142787.

It is an arithmetic number, because the mean of its divisors is an integer number (900600).

Almost surely, 2^22405313 is an apocalyptic number.

It is an amenable number.

22405313 is a deficient number, since it is larger than the sum of its proper divisors (6413887).

22405313 is a wasteful number, since it uses less digits than its factorization.

22405313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 22405313 is about 4733.4250812704. The cubic root of 22405313 is about 281.9142346030.

Adding to 22405313 its reverse (31350422), we get a palindrome (53755735).

The spelling of 22405313 in words is "twenty-two million, four hundred five thousand, three hundred thirteen".