2723281 has 8 divisors (see below), whose sum is σ = 3145824. Its totient is φ = 2329920.

The previous prime is 2723249. The next prime is 2723293. The reversal of 2723281 is 1823272.

2723281 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2723281 - 2⁵ = 2723249 is a prime.

It is a super-2 number, since 2×2723281² = 14832518809922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2723221) 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 7 ways as a sum of consecutive naturals, for example, 7095 + ... + 7468.

It is an arithmetic number, because the mean of its divisors is an integer number (393228).

2^2723281 is an apocalyptic number.

It is an amenable number.

2723281 is a deficient number, since it is larger than the sum of its proper divisors (422543).

2723281 is a wasteful number, since it uses less digits than its factorization.

2723281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14591.

The product of its digits is 1344, while the sum is 25.

The square root of 2723281 is about 1650.2366496960. The cubic root of 2723281 is about 139.6467454557.

Subtracting from 2723281 its reverse (1823272), we obtain a palindrome (900009).

It can be divided in two parts, 272 and 3281, that added together give a palindrome (3553).

The spelling of 2723281 in words is "two million, seven hundred twenty-three thousand, two hundred eighty-one".