23943845 has 4 divisors (see below), whose sum is σ = 28732620. Its totient is φ = 19155072.

The previous prime is 23943839. The next prime is 23943859. The reversal of 23943845 is 54834932.

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 12397441 + 11546404 = 3521^2 + 3398^2 .

It is a cyclic number.

It is not a de Polignac number, because 23943845 - 2¹⁸ = 23681701 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 23943799 and 23943808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2394380 + ... + 2394389.

It is an arithmetic number, because the mean of its divisors is an integer number (7183155).

Almost surely, 2^23943845 is an apocalyptic number.

It is an amenable number.

23943845 is a deficient number, since it is larger than the sum of its proper divisors (4788775).

23943845 is an equidigital number, since it uses as much as digits as its factorization.

23943845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4788774.

The product of its digits is 103680, while the sum is 38.

The square root of 23943845 is about 4893.2448334413. The cubic root of 23943845 is about 288.2247674696.

The spelling of 23943845 in words is "twenty-three million, nine hundred forty-three thousand, eight hundred forty-five".