2781373 has 8 divisors (see below), whose sum is σ = 3222848. Its totient is φ = 2350944.

The previous prime is 2781349. The next prime is 2781377. The reversal of 2781373 is 3731872.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2781373 - 2¹⁷ = 2650301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2781377) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2211 + ... + 3232.

It is an arithmetic number, because the mean of its divisors is an integer number (402856).

2^2781373 is an apocalyptic number.

It is an amenable number.

2781373 is a deficient number, since it is larger than the sum of its proper divisors (441475).

2781373 is an equidigital number, since it uses as much as digits as its factorization.

2781373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5523.

The product of its digits is 7056, while the sum is 31.

The square root of 2781373 is about 1667.7448845672. The cubic root of 2781373 is about 140.6327312951.

The spelling of 2781373 in words is "two million, seven hundred eighty-one thousand, three hundred seventy-three".