2805285756 has 144 divisors (see below), whose sum is σ = 8214468864. Its totient is φ = 729451008.

The previous prime is 2805285737. The next prime is 2805285773. The reversal of 2805285756 is 6575825082.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 47 ways as a sum of consecutive naturals, for example, 1034955 + ... + 1037661.

Almost surely, 2^2805285756 is an apocalyptic number.

2805285756 is a gapful number since it is divisible by the number (26) 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 2805285756, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4107234432).

2805285756 is an abundant number, since it is smaller than the sum of its proper divisors (5409183108).

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

2805285756 is a wasteful number, since it uses less digits than its factorization.

2805285756 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820 (or 2805 counting only the distinct ones).

The product of its (nonzero) digits is 1344000, while the sum is 48.

The square root of 2805285756 is about 52964.9483715410. The cubic root of 2805285756 is about 1410.3461008441.

The spelling of 2805285756 in words is "two billion, eight hundred five million, two hundred eighty-five thousand, seven hundred fifty-six".