2782685880 has 128 divisors (see below), whose sum is σ = 9989179200. Its totient is φ = 684965376.

The previous prime is 2782685879. The next prime is 2782685903. The reversal of 2782685880 is 885862872.

It is a Harshad number since it is a multiple of its sum of digits (54).

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 31 ways as a sum of consecutive naturals, for example, 85059 + ... + 113138.

Almost surely, 2^2782685880 is an apocalyptic number.

2782685880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2782685880 is an abundant number, since it is smaller than the sum of its proper divisors (7206493320).

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

2782685880 is a wasteful number, since it uses less digits than its factorization.

2782685880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198230 (or 198220 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The square root of 2782685880 is about 52751.1694657095. The cubic root of 2782685880 is about 1406.5485524339.

The spelling of 2782685880 in words is "two billion, seven hundred eighty-two million, six hundred eighty-five thousand, eight hundred eighty".