20536011 has 10 divisors (see below), whose sum is σ = 30677372. Its totient is φ = 13690620.

The previous prime is 20535947. The next prime is 20536013. The reversal of 20536011 is 11063502.

It is not a de Polignac number, because 20536011 - 2⁶ = 20535947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20536013) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 126685 + ... + 126846.

Almost surely, 2^20536011 is an apocalyptic number.

20536011 is a deficient number, since it is larger than the sum of its proper divisors (10141361).

20536011 is an equidigital number, since it uses as much as digits as its factorization.

20536011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253543 (or 253534 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 20536011 is about 4531.6675738628. The cubic root of 20536011 is about 273.8453449080.

Adding to 20536011 its reverse (11063502), we get a palindrome (31599513).

The spelling of 20536011 in words is "twenty million, five hundred thirty-six thousand, eleven".