2781672 has 16 divisors (see below), whose sum is σ = 6954240. Its totient is φ = 927216.

The previous prime is 2781637. The next prime is 2781677. The reversal of 2781672 is 2761872.

2781672 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (2781677) by changing a digit.

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, 57928 + ... + 57975.

It is an arithmetic number, because the mean of its divisors is an integer number (434640).

2^2781672 is an apocalyptic number.

It is an amenable number.

2781672 is an abundant number, since it is smaller than the sum of its proper divisors (4172568).

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

2781672 is a wasteful number, since it uses less digits than its factorization.

2781672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115912 (or 115908 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 2781672 is about 1667.8345241660. The cubic root of 2781672 is about 140.6377704946.

The spelling of 2781672 in words is "two million, seven hundred eighty-one thousand, six hundred seventy-two".