20002844 has 12 divisors (see below), whose sum is σ = 35053368. Its totient is φ = 9987600.

The previous prime is 20002841. The next prime is 20002907. The reversal of 20002844 is 44820002.

It is a super-2 number, since 2×20002844² = 800227536176672, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239 + ... + 6329.

It is an arithmetic number, because the mean of its divisors is an integer number (2921114).

Almost surely, 2^20002844 is an apocalyptic number.

It is an amenable number.

20002844 is a deficient number, since it is larger than the sum of its proper divisors (15050524).

20002844 is a wasteful number, since it uses less digits than its factorization.

20002844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6916 (or 6914 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 20002844 is about 4472.4539125630. The cubic root of 20002844 is about 271.4546273892.

Adding to 20002844 its reverse (44820002), we get a palindrome (64822846).

The spelling of 20002844 in words is "twenty million, two thousand, eight hundred forty-four".