22340813 has 8 divisors (see below), whose sum is σ = 24429600. Its totient is φ = 20261680.

The previous prime is 22340767. The next prime is 22340819. The reversal of 22340813 is 31804322.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22340813 - 2¹⁸ = 22078669 is a prime.

It is a super-2 number, since 2×22340813² = 998223851001938, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22340819) 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 7 ways as a sum of consecutive naturals, for example, 2963 + ... + 7311.

It is an arithmetic number, because the mean of its divisors is an integer number (3053700).

Almost surely, 2^22340813 is an apocalyptic number.

It is an amenable number.

22340813 is a deficient number, since it is larger than the sum of its proper divisors (2088787).

22340813 is a wasteful number, since it uses less digits than its factorization.

22340813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4827.

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 22340813 is about 4726.6069225185. The cubic root of 22340813 is about 281.6434514360.

The spelling of 22340813 in words is "twenty-two million, three hundred forty thousand, eight hundred thirteen".