23000505 has 16 divisors (see below), whose sum is σ = 40146624. Its totient is φ = 11151680.

The previous prime is 23000491. The next prime is 23000513. The reversal of 23000505 is 50500032.

It is not a de Polignac number, because 23000505 - 2⁷ = 23000377 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69534 + ... + 69863.

It is an arithmetic number, because the mean of its divisors is an integer number (2509164).

Almost surely, 2^23000505 is an apocalyptic number.

It is an amenable number.

23000505 is a deficient number, since it is larger than the sum of its proper divisors (17146119).

23000505 is a wasteful number, since it uses less digits than its factorization.

23000505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139416.

The product of its (nonzero) digits is 150, while the sum is 15.

The square root of 23000505 is about 4795.8841729133. The cubic root of 23000505 is about 284.3887793508.

Adding to 23000505 its reverse (50500032), we get a palindrome (73500537).

The spelling of 23000505 in words is "twenty-three million, five hundred five", and thus it is an aban number.