20588 has 6 divisors (see below), whose sum is σ = 36036. Its totient is φ = 10292.

The previous prime is 20563. The next prime is 20593. The reversal of 20588 is 88502.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 20588.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2570 + ... + 2577.

It is an arithmetic number, because the mean of its divisors is an integer number (6006).

2²⁰⁵⁸⁸ is an apocalyptic number.

It is an amenable number.

20588 is a deficient number, since it is larger than the sum of its proper divisors (15448).

20588 is a wasteful number, since it uses less digits than its factorization.

20588 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5151 (or 5149 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 20588 is about 143.4851908735. The cubic root of 20588 is about 27.4076239285.

The spelling of 20588 in words is "twenty thousand, five hundred eighty-eight".