20003934 has 16 divisors (see below), whose sum is σ = 42361488. Its totient is φ = 6275712.

The previous prime is 20003933. The next prime is 20003957. The reversal of 20003934 is 43930002.

It is a self number, because there is not a number n which added to its sum of digits gives 20003934.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003933) 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, 97957 + ... + 98160.

It is an arithmetic number, because the mean of its divisors is an integer number (2647593).

Almost surely, 2^20003934 is an apocalyptic number.

20003934 is an abundant number, since it is smaller than the sum of its proper divisors (22357554).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20003934 is a wasteful number, since it uses less digits than its factorization.

20003934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196139.

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 20003934 is about 4472.5757679440. The cubic root of 20003934 is about 271.4595580242.

Adding to 20003934 its reverse (43930002), we get a palindrome (63933936).

The spelling of 20003934 in words is "twenty million, three thousand, nine hundred thirty-four".