20000535 has 16 divisors (see below), whose sum is σ = 32866656. Its totient is φ = 10378368.

The previous prime is 20000531. The next prime is 20000537. The reversal of 20000535 is 53500002.

It is not a de Polignac number, because 20000535 - 2² = 20000531 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17464 + ... + 18573.

It is an arithmetic number, because the mean of its divisors is an integer number (2054166).

Almost surely, 2^20000535 is an apocalyptic number.

20000535 is a deficient number, since it is larger than the sum of its proper divisors (12866121).

20000535 is a wasteful number, since it uses less digits than its factorization.

20000535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36082.

The product of its (nonzero) digits is 150, while the sum is 15.

The square root of 20000535 is about 4472.1957694180. The cubic root of 20000535 is about 271.4441819936. Note that the first 3 decimals are identical.

Adding to 20000535 its reverse (53500002), we get a palindrome (73500537).

The spelling of 20000535 in words is "twenty million, five hundred thirty-five", and thus it is an aban number.