20940241 has 4 divisors (see below), whose sum is σ = 23931712. Its totient is φ = 17948772.

The previous prime is 20940203. The next prime is 20940251. The reversal of 20940241 is 14204902.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20940241 - 2¹¹ = 20938193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20940251) 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, 1495725 + ... + 1495738.

It is an arithmetic number, because the mean of its divisors is an integer number (5982928).

Almost surely, 2^20940241 is an apocalyptic number.

It is an amenable number.

20940241 is a deficient number, since it is larger than the sum of its proper divisors (2991471).

20940241 is an equidigital number, since it uses as much as digits as its factorization.

20940241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991470.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 20940241 is about 4576.0508082844. The cubic root of 20940241 is about 275.6304697231.

The spelling of 20940241 in words is "twenty million, nine hundred forty thousand, two hundred forty-one".