22307813 has 8 divisors (see below), whose sum is σ = 24929856. Its totient is φ = 19784800.

The previous prime is 22307777. The next prime is 22307819. The reversal of 22307813 is 31870322.

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 22307813 - 2⁸ = 22307557 is a prime.

It is a super-3 number, since 3×22307813³ (a number of 23 digits) contains 333 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 (22307819) 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, 24281 + ... + 25182.

It is an arithmetic number, because the mean of its divisors is an integer number (3116232).

Almost surely, 2^22307813 is an apocalyptic number.

It is an amenable number.

22307813 is a deficient number, since it is larger than the sum of its proper divisors (2622043).

22307813 is a wasteful number, since it uses less digits than its factorization.

22307813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49515.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 22307813 is about 4723.1147561752. The cubic root of 22307813 is about 281.5047096352.

The spelling of 22307813 in words is "twenty-two million, three hundred seven thousand, eight hundred thirteen".