20983039 has 8 divisors (see below), whose sum is σ = 26160768. Its totient is φ = 16350360.

The previous prime is 20983031. The next prime is 20983043. The reversal of 20983039 is 93038902.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20983039 - 2³ = 20983031 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 20982995 and 20983013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20983031) 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 7 ways as a sum of consecutive naturals, for example, 136177 + ... + 136330.

It is an arithmetic number, because the mean of its divisors is an integer number (3270096).

Almost surely, 2^20983039 is an apocalyptic number.

20983039 is a deficient number, since it is larger than the sum of its proper divisors (5177729).

20983039 is a wasteful number, since it uses less digits than its factorization.

20983039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 272525.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 20983039 is about 4580.7247243204. The cubic root of 20983039 is about 275.8181212625.

The spelling of 20983039 in words is "twenty million, nine hundred eighty-three thousand, thirty-nine".