2791680 has 72 divisors (see below), whose sum is σ = 8928192. Its totient is φ = 743424.

The previous prime is 2791673. The next prime is 2791681. The reversal of 2791680 is 861972.

It is not an unprimeable number, because it can be changed into a prime (2791681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3477 + ... + 4203.

2^2791680 is an apocalyptic number.

2791680 is a gapful number since it is divisible by the number (20) 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 2791680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4464096).

2791680 is an abundant number, since it is smaller than the sum of its proper divisors (6136512).

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

2791680 is an equidigital number, since it uses as much as digits as its factorization.

2791680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 2791680 is about 1670.8321280129. The cubic root of 2791680 is about 140.8062325065.

The spelling of 2791680 in words is "two million, seven hundred ninety-one thousand, six hundred eighty".