22318873 has 4 divisors (see below), whose sum is σ = 22372560. Its totient is φ = 22265188.

The previous prime is 22318871. The next prime is 22318889. The reversal of 22318873 is 37881322.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22318873 - 2¹ = 22318871 is a prime.

It is a super-3 number, since 3×22318873³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22318871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26215 + ... + 27052.

It is an arithmetic number, because the mean of its divisors is an integer number (5593140).

Almost surely, 2^22318873 is an apocalyptic number.

It is an amenable number.

22318873 is a deficient number, since it is larger than the sum of its proper divisors (53687).

22318873 is an equidigital number, since it uses as much as digits as its factorization.

22318873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53686.

The product of its digits is 16128, while the sum is 34.

The square root of 22318873 is about 4724.2854486155. The cubic root of 22318873 is about 281.5512243950.

The spelling of 22318873 in words is "twenty-two million, three hundred eighteen thousand, eight hundred seventy-three".