20005038 has 24 divisors (see below), whose sum is σ = 43641000. Its totient is φ = 6622704.

The previous prime is 20005021. The next prime is 20005087. The reversal of 20005038 is 83050002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20005038.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1048 + ... + 6411.

It is an arithmetic number, because the mean of its divisors is an integer number (1818375).

Almost surely, 2^20005038 is an apocalyptic number.

20005038 is an abundant number, since it is smaller than the sum of its proper divisors (23635962).

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

20005038 is a wasteful number, since it uses less digits than its factorization.

20005038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7616 (or 7613 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 20005038 is about 4472.6991850559. The cubic root of 20005038 is about 271.4645518059.

The spelling of 20005038 in words is "twenty million, five thousand, thirty-eight".