20000038 has 4 divisors (see below), whose sum is σ = 30000060. Its totient is φ = 10000018.

The previous prime is 20000033. The next prime is 20000047. The reversal of 20000038 is 83000002.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (13) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 19999982 and 20000027.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000008 + ... + 5000011.

It is an arithmetic number, because the mean of its divisors is an integer number (7500015).

Almost surely, 2^20000038 is an apocalyptic number.

20000038 is a deficient number, since it is larger than the sum of its proper divisors (10000022).

20000038 is a wasteful number, since it uses less digits than its factorization.

20000038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10000021.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 20000038 is about 4472.1402035267. The cubic root of 20000038 is about 271.4419335725.

The spelling of 20000038 in words is "twenty million, thirty-eight", and thus it is an aban number and an uban number.