2104200020 has 96 divisors (see below), whose sum is σ = 4982777856. Its totient is φ = 741081600.

The previous prime is 2104199971. The next prime is 2104200023. The reversal of 2104200020 is 200024012.

It is a junction number, because it is equal to n+sod(n) for n = 2104199974 and 2104200010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2104200023) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 570422 + ... + 574098.

It is an arithmetic number, because the mean of its divisors is an integer number (51903936).

Almost surely, 2^2104200020 is an apocalyptic number.

2104200020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2104200020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2491388928).

2104200020 is an abundant number, since it is smaller than the sum of its proper divisors (2878577836).

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

2104200020 is a wasteful number, since it uses less digits than its factorization.

2104200020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3801 (or 3799 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 11.

The square root of 2104200020 is about 45871.5600345138. The cubic root of 2104200020 is about 1281.4323199760.

Adding to 2104200020 its reverse (200024012), we get a palindrome (2304224032).

The spelling of 2104200020 in words is "two billion, one hundred four million, two hundred thousand, twenty".