2744281 has 4 divisors (see below), whose sum is σ = 2747700. Its totient is φ = 2740864.

The previous prime is 2744279. The next prime is 2744297. The reversal of 2744281 is 1824472.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1478656 + 1265625 = 1216^2 + 1125^2 .

It is a cyclic number.

It is not a de Polignac number, because 2744281 - 2¹ = 2744279 is a prime.

It is a super-2 number, since 2×2744281² = 15062156413922, which contains 22 as substring.

It is a Duffinian number.

2744281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2744081) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 225 + ... + 2353.

It is an arithmetic number, because the mean of its divisors is an integer number (686925).

2^2744281 is an apocalyptic number.

It is an amenable number.

2744281 is a deficient number, since it is larger than the sum of its proper divisors (3419).

2744281 is a wasteful number, since it uses less digits than its factorization.

2744281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3418.

The product of its digits is 3584, while the sum is 28.

The square root of 2744281 is about 1656.5871543628. The cubic root of 2744281 is about 140.0047787484.

It can be divided in two parts, 2744 and 281, that added together give a square (3025 = 55²).

The spelling of 2744281 in words is "two million, seven hundred forty-four thousand, two hundred eighty-one".