2793881680 has 20 divisors (see below), whose sum is σ = 6495775092. Its totient is φ = 1117552640.

The previous prime is 2793881659. The next prime is 2793881731. The reversal of 2793881680 is 861883972.

It can be written as a sum of positive squares in 2 ways, for example, as 563397696 + 2230483984 = 23736^2 + 47228^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17461681 + ... + 17461840.

Almost surely, 2^2793881680 is an apocalyptic number.

2793881680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2793881680 is an abundant number, since it is smaller than the sum of its proper divisors (3701893412).

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

2793881680 is a wasteful number, since it uses less digits than its factorization.

2793881680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34923534 (or 34923528 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 2793881680 is about 52857.1819150435. The cubic root of 2793881680 is about 1408.4323875414.

The spelling of 2793881680 in words is "two billion, seven hundred ninety-three million, eight hundred eighty-one thousand, six hundred eighty".