20005335 has 48 divisors (see below), whose sum is σ = 40622400. Its totient is φ = 8916480.

The previous prime is 20005319. The next prime is 20005343. The reversal of 20005335 is 53350002.

It is not a de Polignac number, because 20005335 - 2⁴ = 20005319 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12141 + ... + 13689.

It is an arithmetic number, because the mean of its divisors is an integer number (846300).

Almost surely, 2^20005335 is an apocalyptic number.

20005335 is an abundant number, since it is smaller than the sum of its proper divisors (20617065).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20005335 is a wasteful number, since it uses less digits than its factorization.

20005335 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608 (or 1605 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 18.

The square root of 20005335 is about 4472.7323863607. The cubic root of 20005335 is about 271.4658952104.

Adding to 20005335 its reverse (53350002), we get a palindrome (73355337).

The spelling of 20005335 in words is "twenty million, five thousand, three hundred thirty-five".