20983833 has 32 divisors (see below), whose sum is σ = 33761280. Its totient is φ = 12804480.

The previous prime is 20983799. The next prime is 20983891. The reversal of 20983833 is 33838902.

It is not a de Polignac number, because 20983833 - 2⁶ = 20983769 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20983133) 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 31 ways as a sum of consecutive naturals, for example, 66885 + ... + 67197.

It is an arithmetic number, because the mean of its divisors is an integer number (1055040).

Almost surely, 2^20983833 is an apocalyptic number.

It is an amenable number.

20983833 is a deficient number, since it is larger than the sum of its proper divisors (12777447).

20983833 is a wasteful number, since it uses less digits than its factorization.

20983833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 520 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 20983833 is about 4580.8113910092. The cubic root of 20983833 is about 275.8216002124.

The spelling of 20983833 in words is "twenty million, nine hundred eighty-three thousand, eight hundred thirty-three".