20535056 has 10 divisors (see below), whose sum is σ = 39786702. Its totient is φ = 10267520.

The previous prime is 20535049. The next prime is 20535061. The reversal of 20535056 is 65053502.

It can be written as a sum of positive squares in only one way, i.e., 19360000 + 1175056 = 4400^2 + 1084^2 .

It is an unprimeable number.

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, 641705 + ... + 641736.

Almost surely, 2^20535056 is an apocalyptic number.

It is an amenable number.

20535056 is a deficient number, since it is larger than the sum of its proper divisors (19251646).

20535056 is a wasteful number, since it uses less digits than its factorization.

20535056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1283449 (or 1283443 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 20535056 is about 4531.5622030377. The cubic root of 20535056 is about 273.8410999038.

Adding to 20535056 its reverse (65053502), we get a palindrome (85588558).

The spelling of 20535056 in words is "twenty million, five hundred thirty-five thousand, fifty-six".