2104512520 has 64 divisors (see below), whose sum is σ = 5184181440. Its totient is φ = 762528000.

The previous prime is 2104512503. The next prime is 2104512533. The reversal of 2104512520 is 252154012.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2104512491 and 2104512500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 116070 + ... + 132970.

It is an arithmetic number, because the mean of its divisors is an integer number (81002835).

Almost surely, 2^2104512520 is an apocalyptic number.

2104512520 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 2104512520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2592090720).

2104512520 is an abundant number, since it is smaller than the sum of its proper divisors (3079668920).

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

2104512520 is a wasteful number, since it uses less digits than its factorization.

2104512520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17206 (or 17202 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 22.

The square root of 2104512520 is about 45874.9661580257. The cubic root of 2104512520 is about 1281.4957530739.

Adding to 2104512520 its reverse (252154012), we get a palindrome (2356666532).

The spelling of 2104512520 in words is "two billion, one hundred four million, five hundred twelve thousand, five hundred twenty".