22805013 has 32 divisors (see below), whose sum is σ = 38154240. Its totient is φ = 11770560.

The previous prime is 22804967. The next prime is 22805023. The reversal of 22805013 is 31050822.

It is not a de Polignac number, because 22805013 - 2⁶ = 22804949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22805023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61956 + ... + 62322.

It is an arithmetic number, because the mean of its divisors is an integer number (1192320).

Almost surely, 2^22805013 is an apocalyptic number.

It is an amenable number.

22805013 is a deficient number, since it is larger than the sum of its proper divisors (15349227).

22805013 is a wasteful number, since it uses less digits than its factorization.

22805013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 22805013 is about 4775.4594543353. The cubic root of 22805013 is about 283.5807682429.

Adding to 22805013 its reverse (31050822), we get a palindrome (53855835).

The spelling of 22805013 in words is "twenty-two million, eight hundred five thousand, thirteen".