22813813 has 16 divisors (see below), whose sum is σ = 27743040. Its totient is φ = 18489600.

The previous prime is 22813801. The next prime is 22813829. The reversal of 22813813 is 31831822.

It is a cyclic number.

It is not a de Polignac number, because 22813813 - 2¹³ = 22805621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22813853) 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, 343 + ... + 6763.

It is an arithmetic number, because the mean of its divisors is an integer number (1733940).

Almost surely, 2^22813813 is an apocalyptic number.

It is an amenable number.

22813813 is a deficient number, since it is larger than the sum of its proper divisors (4929227).

22813813 is a wasteful number, since it uses less digits than its factorization.

22813813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6468.

The product of its digits is 2304, while the sum is 28.

The square root of 22813813 is about 4776.3807427800. The cubic root of 22813813 is about 283.6172396076.

Subtracting 22813813 from its reverse (31831822), we obtain a square (9018009 = 3003²).

It can be divided in two parts, 228 and 13813, that added together give a palindrome (14041).

The spelling of 22813813 in words is "twenty-two million, eight hundred thirteen thousand, eight hundred thirteen".