23730005 has 16 divisors (see below), whose sum is σ = 30851184. Its totient is φ = 17418240.

The previous prime is 23730001. The next prime is 23730041. The reversal of 23730005 is 50003732.

It can be written as a sum of positive squares in 8 ways, for example, as 3865156 + 19864849 = 1966^2 + 4457^2 .

It is not a de Polignac number, because 23730005 - 2² = 23730001 is a prime.

It is a super-2 number, since 2×23730005² = 1126226274600050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23730001) 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 15 ways as a sum of consecutive naturals, for example, 10757 + ... + 12773.

It is an arithmetic number, because the mean of its divisors is an integer number (1928199).

Almost surely, 2^23730005 is an apocalyptic number.

It is an amenable number.

23730005 is a deficient number, since it is larger than the sum of its proper divisors (7121179).

23730005 is a wasteful number, since it uses less digits than its factorization.

23730005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2216.

The product of its (nonzero) digits is 630, while the sum is 20.

The square root of 23730005 is about 4871.3452967327. The cubic root of 23730005 is about 287.3641651960.

Adding to 23730005 its reverse (50003732), we get a palindrome (73733737).

The spelling of 23730005 in words is "twenty-three million, seven hundred thirty thousand, five".