2721984 has 28 divisors (see below), whose sum is σ = 7202424. Its totient is φ = 907264.

The previous prime is 2721947. The next prime is 2722001. The reversal of 2721984 is 4891272.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6897 + ... + 7280.

2^2721984 is an apocalyptic number.

2721984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2721984 is an abundant number, since it is smaller than the sum of its proper divisors (4480440).

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

2721984 is a wasteful number, since it uses less digits than its factorization.

2721984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14192 (or 14182 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 2721984 is about 1649.8436289540. The cubic root of 2721984 is about 139.6245723748.

The spelling of 2721984 in words is "two million, seven hundred twenty-one thousand, nine hundred eighty-four".