2743281 has 8 divisors (see below), whose sum is σ = 4064160. Its totient is φ = 1828836.

The previous prime is 2743259. The next prime is 2743289. The reversal of 2743281 is 1823472.

It is not a de Polignac number, because 2743281 - 2⁹ = 2742769 is a prime.

It is a super-2 number, since 2×2743281² = 15051181289922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 101603 = 2743281 / (2 + 7 + 4 + 3 + 2 + 8 + 1).

2743281 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2743289) 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, 50775 + ... + 50828.

It is an arithmetic number, because the mean of its divisors is an integer number (508020).

2^2743281 is an apocalyptic number.

It is an amenable number.

2743281 is a deficient number, since it is larger than the sum of its proper divisors (1320879).

2743281 is a wasteful number, since it uses less digits than its factorization.

2743281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101612 (or 101606 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 2743281 is about 1656.2853015106. The cubic root of 2743281 is about 139.9877710407.

The spelling of 2743281 in words is "two million, seven hundred forty-three thousand, two hundred eighty-one".