20000838 has 32 divisors (see below), whose sum is σ = 46996992. Its totient is φ = 5594400.

The previous prime is 20000837. The next prime is 20000839. The reversal of 20000838 is 83800002.

It is an interprime number because it is at equal distance from previous prime (20000837) and next prime (20000839).

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20000837) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10798 + ... + 12513.

It is an arithmetic number, because the mean of its divisors is an integer number (1468656).

Almost surely, 2^20000838 is an apocalyptic number.

20000838 is an abundant number, since it is smaller than the sum of its proper divisors (26996154).

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

20000838 is a wasteful number, since it uses less digits than its factorization.

20000838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23340.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 20000838 is about 4472.2296452664. The cubic root of 20000838 is about 271.4455527431.

The spelling of 20000838 in words is "twenty million, eight hundred thirty-eight", and thus it is an aban number.