22318073 has 4 divisors (see below), whose sum is σ = 23288448. Its totient is φ = 21347700.

The previous prime is 22318013. The next prime is 22318099. The reversal of 22318073 is 37081322.

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 22318073 - 2¹⁶ = 22252537 is a prime.

It is a super-3 number, since 3×22318073³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22318003) 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, 485153 + ... + 485198.

It is an arithmetic number, because the mean of its divisors is an integer number (5822112).

Almost surely, 2^22318073 is an apocalyptic number.

22318073 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

22318073 is a deficient number, since it is larger than the sum of its proper divisors (970375).

22318073 is an equidigital number, since it uses as much as digits as its factorization.

22318073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970374.

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

The square root of 22318073 is about 4724.2007789678. The cubic root of 22318073 is about 281.5478603711.

Adding to 22318073 its reverse (37081322), we get a palindrome (59399395).

The spelling of 22318073 in words is "twenty-two million, three hundred eighteen thousand, seventy-three".