20035 has 4 divisors (see below), whose sum is σ = 24048. Its totient is φ = 16024.

The previous prime is 20029. The next prime is 20047. The reversal of 20035 is 53002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 53002 = 2 ⋅26501.

It is a cyclic number.

It is not a de Polignac number, because 20035 - 2¹¹ = 17987 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1999 + ... + 2008.

It is an arithmetic number, because the mean of its divisors is an integer number (6012).

2²⁰⁰³⁵ is an apocalyptic number.

20035 is a deficient number, since it is larger than the sum of its proper divisors (4013).

20035 is an equidigital number, since it uses as much as digits as its factorization.

20035 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4012.

The product of its (nonzero) digits is 30, while the sum is 10.

The square root of 20035 is about 141.5450458335. The cubic root of 20035 is about 27.1600010411.

Adding to 20035 its reverse (53002), we get a palindrome (73037).

The spelling of 20035 in words is "twenty thousand, thirty-five".