20000943 has 6 divisors (see below), whose sum is σ = 28890264. Its totient is φ = 13333956.

The previous prime is 20000933. The next prime is 20000951. The reversal of 20000943 is 34900002.

It is not a de Polignac number, because 20000943 - 2⁶ = 20000879 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1111155 + ... + 1111172.

It is an arithmetic number, because the mean of its divisors is an integer number (4815044).

Almost surely, 2^20000943 is an apocalyptic number.

20000943 is a deficient number, since it is larger than the sum of its proper divisors (8889321).

20000943 is a wasteful number, since it uses less digits than its factorization.

20000943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222333 (or 2222330 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 20000943 is about 4472.2413843620. The cubic root of 20000943 is about 271.4460277521.

Adding to 20000943 its reverse (34900002), we get a palindrome (54900945).

The spelling of 20000943 in words is "twenty million, nine hundred forty-three", and thus it is an aban number.