23943257 has 16 divisors (see below), whose sum is σ = 26611200. Its totient is φ = 21404352.

The previous prime is 23943251. The next prime is 23943281. The reversal of 23943257 is 75234932.

It is a cyclic number.

It is not a de Polignac number, because 23943257 - 2⁶ = 23943193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23943251) 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, 90908 + ... + 91170.

It is an arithmetic number, because the mean of its divisors is an integer number (1663200).

Almost surely, 2^23943257 is an apocalyptic number.

It is an amenable number.

23943257 is a deficient number, since it is larger than the sum of its proper divisors (2667943).

23943257 is a wasteful number, since it uses less digits than its factorization.

23943257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its digits is 45360, while the sum is 35.

The square root of 23943257 is about 4893.1847502419. The cubic root of 23943257 is about 288.2224080943. Note that the first 3 decimals are identical.

The spelling of 23943257 in words is "twenty-three million, nine hundred forty-three thousand, two hundred fifty-seven".