2733281 has 4 divisors (see below), whose sum is σ = 2748564. Its totient is φ = 2718000.

The previous prime is 2733271. The next prime is 2733329. The reversal of 2733281 is 1823372.

2733281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 144400 + 2588881 = 380^2 + 1609^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2733281 is a prime.

It is a super-2 number, since 2×2733281² = 14941650049922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2733281.

It is not an unprimeable number, because it can be changed into a prime (2733271) 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, 7370 + ... + 7731.

It is an arithmetic number, because the mean of its divisors is an integer number (687141).

2^2733281 is an apocalyptic number.

It is an amenable number.

2733281 is a deficient number, since it is larger than the sum of its proper divisors (15283).

2733281 is a wasteful number, since it uses less digits than its factorization.

2733281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15282.

The product of its digits is 2016, while the sum is 26.

The square root of 2733281 is about 1653.2637418150. The cubic root of 2733281 is about 139.8174661951.

Subtracting from 2733281 its reverse (1823372), we obtain a palindrome (909909).

The spelling of 2733281 in words is "two million, seven hundred thirty-three thousand, two hundred eighty-one".