2781696 has 40 divisors (see below), whose sum is σ = 7414704. Its totient is φ = 926720.

The previous prime is 2781683. The next prime is 2781703. The reversal of 2781696 is 6961872.

It is an alternating number because its digits alternate between even and odd.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 631 + ... + 2441.

2^2781696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2781696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3707352).

2781696 is an abundant number, since it is smaller than the sum of its proper divisors (4633008).

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

2781696 is an equidigital number, since it uses as much as digits as its factorization.

2781696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832 (or 1816 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 2781696 is about 1667.8417191089. The cubic root of 2781696 is about 140.6381749631.

The spelling of 2781696 in words is "two million, seven hundred eighty-one thousand, six hundred ninety-six".