22973993 has 12 divisors (see below), whose sum is σ = 26814852. Its totient is φ = 19625760.

The previous prime is 22973969. The next prime is 22973999. The reversal of 22973993 is 39937922.

It can be written as a sum of positive squares in 2 ways, for example, as 18593344 + 4380649 = 4312^2 + 2093^2 .

It is not a de Polignac number, because 22973993 - 2⁸ = 22973737 is a prime.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22973999) 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 11 ways as a sum of consecutive naturals, for example, 18863 + ... + 20043.

It is an arithmetic number, because the mean of its divisors is an integer number (2234571).

Almost surely, 2^22973993 is an apocalyptic number.

It is an amenable number.

22973993 is a deficient number, since it is larger than the sum of its proper divisors (3840859).

22973993 is a wasteful number, since it uses less digits than its factorization.

22973993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592 (or 1585 counting only the distinct ones).

The product of its digits is 183708, while the sum is 44.

The square root of 22973993 is about 4793.1193392195. The cubic root of 22973993 is about 284.2794685029.

The spelling of 22973993 in words is "twenty-two million, nine hundred seventy-three thousand, nine hundred ninety-three".