20982033 has 6 divisors (see below), whose sum is σ = 30307394. Its totient is φ = 13988016.

The previous prime is 20982019. The next prime is 20982041. The reversal of 20982033 is 33028902.

It can be written as a sum of positive squares in only one way, i.e., 13046544 + 7935489 = 3612^2 + 2817^2 .

It is not a de Polignac number, because 20982033 - 2⁵ = 20982001 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 = 20981988 and 20982006.

It is not an unprimeable number, because it can be changed into a prime (20982053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1165660 + ... + 1165677.

Almost surely, 2^20982033 is an apocalyptic number.

It is an amenable number.

20982033 is a deficient number, since it is larger than the sum of its proper divisors (9325361).

20982033 is a wasteful number, since it uses less digits than its factorization.

20982033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331343 (or 2331340 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 20982033 is about 4580.6149150523. The cubic root of 20982033 is about 275.8137132982.

The spelling of 20982033 in words is "twenty million, nine hundred eighty-two thousand, thirty-three".