20530235 has 16 divisors (see below), whose sum is σ = 26991360. Its totient is φ = 14867040.

The previous prime is 20530229. The next prime is 20530247. The reversal of 20530235 is 53203502.

It is not a de Polignac number, because 20530235 - 2⁴ = 20530219 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14906 + ... + 16224.

It is an arithmetic number, because the mean of its divisors is an integer number (1686960).

Almost surely, 2^20530235 is an apocalyptic number.

20530235 is a deficient number, since it is larger than the sum of its proper divisors (6461125).

20530235 is a wasteful number, since it uses less digits than its factorization.

20530235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618.

The product of its (nonzero) digits is 900, while the sum is 20.

The square root of 20530235 is about 4531.0302360501. The cubic root of 20530235 is about 273.8196684020.

Adding to 20530235 its reverse (53203502), we get a palindrome (73733737).

The spelling of 20530235 in words is "twenty million, five hundred thirty thousand, two hundred thirty-five".