20530635 has 16 divisors (see below), whose sum is σ = 32931360. Its totient is φ = 10922240.

The previous prime is 20530619. The next prime is 20530669. The reversal of 20530635 is 53603502.

It is not a de Polignac number, because 20530635 - 2⁴ = 20530619 is a prime.

It is an unprimeable number.

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, 5431 + ... + 8399.

It is an arithmetic number, because the mean of its divisors is an integer number (2058210).

Almost surely, 2^20530635 is an apocalyptic number.

20530635 is a deficient number, since it is larger than the sum of its proper divisors (12400725).

20530635 is a wasteful number, since it uses less digits than its factorization.

20530635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3438.

The product of its (nonzero) digits is 2700, while the sum is 24.

The square root of 20530635 is about 4531.0743759069. The cubic root of 20530635 is about 273.8214467086.

The spelling of 20530635 in words is "twenty million, five hundred thirty thousand, six hundred thirty-five".