2721648 has 20 divisors (see below), whose sum is σ = 7031048. Its totient is φ = 907200.

The previous prime is 2721619. The next prime is 2721671. The reversal of 2721648 is 8461272.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

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, 28303 + ... + 28398.

2^2721648 is an apocalyptic number.

It is an amenable number.

2721648 is an abundant number, since it is smaller than the sum of its proper divisors (4309400).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2721648 is a wasteful number, since it uses less digits than its factorization.

2721648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56712 (or 56706 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 2721648 is about 1649.7417979793. The cubic root of 2721648 is about 139.6188270818.

The spelling of 2721648 in words is "two million, seven hundred twenty-one thousand, six hundred forty-eight".