2882721 has 16 divisors (see below), whose sum is σ = 4014080. Its totient is φ = 1838160.

The previous prime is 2882717. The next prime is 2882729. The reversal of 2882721 is 1272882.

It is a happy number.

It is not a de Polignac number, because 2882721 - 2² = 2882717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2882729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12816 + ... + 13038.

It is an arithmetic number, because the mean of its divisors is an integer number (250880).

2^2882721 is an apocalyptic number.

It is an amenable number.

2882721 is a deficient number, since it is larger than the sum of its proper divisors (1131359).

2882721 is a wasteful number, since it uses less digits than its factorization.

2882721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396.

The product of its digits is 3584, while the sum is 30.

The square root of 2882721 is about 1697.8577678946. The cubic root of 2882721 is about 142.3205250513.

The spelling of 2882721 in words is "two million, eight hundred eighty-two thousand, seven hundred twenty-one".