20203983 has 12 divisors (see below), whose sum is σ = 29313960. Its totient is φ = 13409136.

The previous prime is 20203969. The next prime is 20204003. The reversal of 20203983 is 38930202.

It is not a de Polignac number, because 20203983 - 2⁶ = 20203919 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20203903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2841 + ... + 6962.

It is an arithmetic number, because the mean of its divisors is an integer number (2442830).

Almost surely, 2^20203983 is an apocalyptic number.

20203983 is a deficient number, since it is larger than the sum of its proper divisors (9109977).

20203983 is a wasteful number, since it uses less digits than its factorization.

20203983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10038 (or 10035 counting only the distinct ones).

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

The square root of 20203983 is about 4494.8840919427. The cubic root of 20203983 is about 272.3614670536.

The spelling of 20203983 in words is "twenty million, two hundred three thousand, nine hundred eighty-three".