23928005 has 4 divisors (see below), whose sum is σ = 28713612. Its totient is φ = 19142400.

The previous prime is 23927983. The next prime is 23928017. The reversal of 23928005 is 50082932.

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 17032129 + 6895876 = 4127^2 + 2626^2 .

It is not a de Polignac number, because 23928005 - 2⁶ = 23927941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 2392796 + ... + 2392805.

It is an arithmetic number, because the mean of its divisors is an integer number (7178403).

Almost surely, 2^23928005 is an apocalyptic number.

It is an amenable number.

23928005 is a deficient number, since it is larger than the sum of its proper divisors (4785607).

23928005 is an equidigital number, since it uses as much as digits as its factorization.

23928005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4785606.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 23928005 is about 4891.6260077811. The cubic root of 23928005 is about 288.1611952872.

The spelling of 23928005 in words is "twenty-three million, nine hundred twenty-eight thousand, five".