2104253856 has 144 divisors (see below), whose sum is σ = 6227081280. Its totient is φ = 691286400.

The previous prime is 2104253843. The next prime is 2104253881. The reversal of 2104253856 is 6583524012.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 2104253856.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13935381 + ... + 13935531.

It is an arithmetic number, because the mean of its divisors is an integer number (43243620).

Almost surely, 2^2104253856 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2104253856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3113540640).

2104253856 is an abundant number, since it is smaller than the sum of its proper divisors (4122827424).

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

2104253856 is a wasteful number, since it uses less digits than its factorization.

2104253856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 2104253856 is about 45872.1468431553. The cubic root of 2104253856 is about 1281.4432483734.

Adding to 2104253856 its reverse (6583524012), we get a palindrome (8687777868).

The spelling of 2104253856 in words is "two billion, one hundred four million, two hundred fifty-three thousand, eight hundred fifty-six".