2721286 has 8 divisors (see below), whose sum is σ = 4089024. Its totient is φ = 1358280.

The previous prime is 2721259. The next prime is 2721307. The reversal of 2721286 is 6821272.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1296 + ... + 2668.

It is an arithmetic number, because the mean of its divisors is an integer number (511128).

2^2721286 is an apocalyptic number.

2721286 is a deficient number, since it is larger than the sum of its proper divisors (1367738).

2721286 is a wasteful number, since it uses less digits than its factorization.

2721286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2366.

The product of its digits is 2688, while the sum is 28.

The square root of 2721286 is about 1649.6320801924. The cubic root of 2721286 is about 139.6126366834.

The spelling of 2721286 in words is "two million, seven hundred twenty-one thousand, two hundred eighty-six".