2081756028 has 48 divisors (see below), whose sum is σ = 5385905280. Its totient is φ = 620491200.

The previous prime is 2081756009. The next prime is 2081756041. The reversal of 2081756028 is 8206571802.

It is a super-2 number, since 2×2081756028² = 8667416320228673568, which contains 22 as substring.

It is a congruent number.

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, 121218 + ... + 137321.

It is an arithmetic number, because the mean of its divisors is an integer number (112206360).

Almost surely, 2^2081756028 is an apocalyptic number.

It is an amenable number.

2081756028 is an abundant number, since it is smaller than the sum of its proper divisors (3304149252).

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

2081756028 is a wasteful number, since it uses less digits than its factorization.

2081756028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258618 (or 258616 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 2081756028 is about 45626.2646728833. The cubic root of 2081756028 is about 1276.8599848900.

The spelling of 2081756028 in words is "two billion, eighty-one million, seven hundred fifty-six thousand, twenty-eight".