20389041 has 12 divisors (see below), whose sum is σ = 30401280. Its totient is φ = 13154040.

The previous prime is 20389027. The next prime is 20389049. The reversal of 20389041 is 14098302.

It is not a de Polignac number, because 20389041 - 2²³ = 12000433 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20388996 and 20389014.

It is not an unprimeable number, because it can be changed into a prime (20389049) 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, 36261 + ... + 36818.

It is an arithmetic number, because the mean of its divisors is an integer number (2533440).

Almost surely, 2^20389041 is an apocalyptic number.

It is an amenable number.

20389041 is a deficient number, since it is larger than the sum of its proper divisors (10012239).

20389041 is a wasteful number, since it uses less digits than its factorization.

20389041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73116 (or 73113 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20389041 is about 4515.4225715873. The cubic root of 20389041 is about 273.1905042335.

The spelling of 20389041 in words is "twenty million, three hundred eighty-nine thousand, forty-one".