20535104 has 14 divisors (see below), whose sum is σ = 40749474. Its totient is φ = 10267520.

The previous prime is 20535089. The next prime is 20535107. The reversal of 20535104 is 40153502.

It can be written as a sum of positive squares in only one way, i.e., 10549504 + 9985600 = 3248^2 + 3160^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20535107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 160367 + ... + 160494.

Almost surely, 2^20535104 is an apocalyptic number.

It is an amenable number.

20535104 is a deficient number, since it is larger than the sum of its proper divisors (20214370).

20535104 is an equidigital number, since it uses as much as digits as its factorization.

20535104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320873 (or 320863 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 20535104 is about 4531.5674992214. The cubic root of 20535104 is about 273.8413132684.

Adding to 20535104 its reverse (40153502), we get a palindrome (60688606).

The spelling of 20535104 in words is "twenty million, five hundred thirty-five thousand, one hundred four".