20712033 has 12 divisors (see below), whose sum is σ = 31492240. Its totient is φ = 13081176.

The previous prime is 20712019. The next prime is 20712037. The reversal of 20712033 is 33021702.

It is not a de Polignac number, because 20712033 - 2⁹ = 20711521 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20711997 and 20712015.

It is not an unprimeable number, because it can be changed into a prime (20712037) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60391 + ... + 60732.

Almost surely, 2^20712033 is an apocalyptic number.

It is an amenable number.

20712033 is a deficient number, since it is larger than the sum of its proper divisors (10780207).

20712033 is a wasteful number, since it uses less digits than its factorization.

20712033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121148 (or 121145 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 20712033 is about 4551.0474618488. The cubic root of 20712033 is about 274.6255310866.

Adding to 20712033 its reverse (33021702), we get a palindrome (53733735).

The spelling of 20712033 in words is "twenty million, seven hundred twelve thousand, thirty-three".