2081404800 has 144 divisors (see below), whose sum is σ = 7427032080. Its totient is φ = 555033600.

The previous prime is 2081404789. The next prime is 2081404909. The reversal of 2081404800 is 84041802.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 7336 + ... + 64935.

Almost surely, 2^2081404800 is an apocalyptic number.

2081404800 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 2081404800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3713516040).

2081404800 is an abundant number, since it is smaller than the sum of its proper divisors (5345627280).

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

2081404800 is a wasteful number, since it uses less digits than its factorization.

2081404800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72301 (or 72281 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 2081404800 is about 45622.4155432393. The cubic root of 2081404800 is about 1276.7881714471.

The spelling of 2081404800 in words is "two billion, eighty-one million, four hundred four thousand, eight hundred".