2104021320 has 128 divisors (see below), whose sum is σ = 6701667840. Its totient is φ = 526622720.

The previous prime is 2104021307. The next prime is 2104021351. The reversal of 2104021320 is 231204012.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 2104021320.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 878044 + ... + 880436.

It is an arithmetic number, because the mean of its divisors is an integer number (52356780).

Almost surely, 2^2104021320 is an apocalyptic number.

2104021320 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 2104021320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3350833920).

2104021320 is an abundant number, since it is smaller than the sum of its proper divisors (4597646520).

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

2104021320 is a wasteful number, since it uses less digits than its factorization.

2104021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2855 (or 2851 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 2104021320 is about 45869.6121631740. The cubic root of 2104021320 is about 1281.3960435707.

Adding to 2104021320 its reverse (231204012), we get a palindrome (2335225332).

The spelling of 2104021320 in words is "two billion, one hundred four million, twenty-one thousand, three hundred twenty".