23940193 has 4 divisors (see below), whose sum is σ = 24029460. Its totient is φ = 23850928.

The previous prime is 23940179. The next prime is 23940197. The reversal of 23940193 is 39104932.

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 9102289 + 14837904 = 3017^2 + 3852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23940193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23940197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44230 + ... + 44767.

It is an arithmetic number, because the mean of its divisors is an integer number (6007365).

Almost surely, 2^23940193 is an apocalyptic number.

It is an amenable number.

23940193 is a deficient number, since it is larger than the sum of its proper divisors (89267).

23940193 is an equidigital number, since it uses as much as digits as its factorization.

23940193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89266.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 23940193 is about 4892.8716516990. The cubic root of 23940193 is about 288.2101130373.

The spelling of 23940193 in words is "twenty-three million, nine hundred forty thousand, one hundred ninety-three".