23168729 has 4 divisors (see below), whose sum is σ = 23373876. Its totient is φ = 22963584.

The previous prime is 23168723. The next prime is 23168753. The reversal of 23168729 is 92786132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 11744329 + 11424400 = 3427^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 23168729 - 2¹⁶ = 23103193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23168692 and 23168701.

It is not an unprimeable number, because it can be changed into a prime (23168723) 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, 102404 + ... + 102629.

It is an arithmetic number, because the mean of its divisors is an integer number (5843469).

Almost surely, 2^23168729 is an apocalyptic number.

It is an amenable number.

23168729 is a deficient number, since it is larger than the sum of its proper divisors (205147).

23168729 is a wasteful number, since it uses less digits than its factorization.

23168729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205146.

The product of its digits is 36288, while the sum is 38.

The square root of 23168729 is about 4813.3905929189. The cubic root of 23168729 is about 285.0804287213.

The spelling of 23168729 in words is "twenty-three million, one hundred sixty-eight thousand, seven hundred twenty-nine".