20207943 has 18 divisors (see below), whose sum is σ = 33955584. Its totient is φ = 11547144.

The previous prime is 20207909. The next prime is 20207953. The reversal of 20207943 is 34970202.

It is not a de Polignac number, because 20207943 - 2¹⁴ = 20191559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20207953) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 22471 + ... + 23352.

Almost surely, 2^20207943 is an apocalyptic number.

20207943 is a deficient number, since it is larger than the sum of its proper divisors (13747641).

20207943 is a wasteful number, since it uses less digits than its factorization.

20207943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45843 (or 45833 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20207943 is about 4495.3245711517. The cubic root of 20207943 is about 272.3792602606.

The spelling of 20207943 in words is "twenty million, two hundred seven thousand, nine hundred forty-three".