2781283 has 8 divisors (see below), whose sum is σ = 2889216. Its totient is φ = 2675400.

The previous prime is 2781271. The next prime is 2781293. The reversal of 2781283 is 3821872.

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 2781283 - 2¹⁷ = 2650211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2781203) 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, 2598 + ... + 3508.

It is an arithmetic number, because the mean of its divisors is an integer number (361152).

2^2781283 is an apocalyptic number.

2781283 is a deficient number, since it is larger than the sum of its proper divisors (107933).

2781283 is an equidigital number, since it uses as much as digits as its factorization.

2781283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1025.

The product of its digits is 5376, while the sum is 31.

The square root of 2781283 is about 1667.7179018047. The cubic root of 2781283 is about 140.6312144085.

The spelling of 2781283 in words is "two million, seven hundred eighty-one thousand, two hundred eighty-three".