22465813 has 4 divisors (see below), whose sum is σ = 22479660. Its totient is φ = 22451968.

The previous prime is 22465811. The next prime is 22465819. The reversal of 22465813 is 31856422.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7279204 + 15186609 = 2698^2 + 3897^2 .

It is a cyclic number.

It is not a de Polignac number, because 22465813 - 2¹ = 22465811 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22465811) 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 3 ways as a sum of consecutive naturals, for example, 4108 + ... + 7861.

It is an arithmetic number, because the mean of its divisors is an integer number (5619915).

Almost surely, 2^22465813 is an apocalyptic number.

It is an amenable number.

22465813 is a deficient number, since it is larger than the sum of its proper divisors (13847).

22465813 is a wasteful number, since it uses less digits than its factorization.

22465813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13846.

The product of its digits is 11520, while the sum is 31.

The square root of 22465813 is about 4739.8114941419. The cubic root of 22465813 is about 282.1677530805.

The spelling of 22465813 in words is "twenty-two million, four hundred sixty-five thousand, eight hundred thirteen".