20005893 has 16 divisors (see below), whose sum is σ = 29816640. Its totient is φ = 13257072.

The previous prime is 20005891. The next prime is 20005903. The reversal of 20005893 is 39850002.

It is not a de Polignac number, because 20005893 - 2¹ = 20005891 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20005891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2530 + ... + 6812.

It is an arithmetic number, because the mean of its divisors is an integer number (1863540).

Almost surely, 2^20005893 is an apocalyptic number.

It is an amenable number.

20005893 is a deficient number, since it is larger than the sum of its proper divisors (9810747).

20005893 is a wasteful number, since it uses less digits than its factorization.

20005893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4465 (or 4459 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 20005893 is about 4472.7947639032. The cubic root of 20005893 is about 271.4684191465.

Adding to 20005893 its reverse (39850002), we get a palindrome (59855895).

The spelling of 20005893 in words is "twenty million, five thousand, eight hundred ninety-three".