2785407680 has 56 divisors (see below), whose sum is σ = 7235738640. Its totient is φ = 1012874240.

The previous prime is 2785407673. The next prime is 2785407697. The reversal of 2785407680 is 867045872.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 392135 + ... + 399174.

Almost surely, 2^2785407680 is an apocalyptic number.

2785407680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2785407680 is an abundant number, since it is smaller than the sum of its proper divisors (4450330960).

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

2785407680 is a wasteful number, since it uses less digits than its factorization.

2785407680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791337 (or 791327 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 47.

The square root of 2785407680 is about 52776.9616404734. The cubic root of 2785407680 is about 1407.0069939660.

The spelling of 2785407680 in words is "two billion, seven hundred eighty-five million, four hundred seven thousand, six hundred eighty".