2808834129920 has 512 divisors, whose sum is σ = 8658521948160. Its totient is φ = 850195906560.

The previous prime is 2808834129911. The next prime is 2808834129931. The reversal of 2808834129920 is 299214388082.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (512).

It is a Harshad number since it is a multiple of its sum of digits (56).

It is a congruent number.

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, 342913025 + ... + 342921215.

It is an arithmetic number, because the mean of its divisors is an integer number (16911175680).

Almost surely, 2^{2808834129920} is an apocalyptic number.

2808834129920 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 2808834129920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4329260974080).

2808834129920 is an abundant number, since it is smaller than the sum of its proper divisors (5849687818240).

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

2808834129920 is an equidigital number, since it uses as much as digits as its factorization.

2808834129920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8269 (or 8241 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 56.

The spelling of 2808834129920 in words is "two trillion, eight hundred eight billion, eight hundred thirty-four million, one hundred twenty-nine thousand, nine hundred twenty".