2881642 has 8 divisors (see below), whose sum is σ = 4371300. Its totient is φ = 1424544.

The previous prime is 2881639. The next prime is 2881649. The reversal of 2881642 is 2461882.

It can be written as a sum of positive squares in 2 ways, for example, as 2792241 + 89401 = 1671^2 + 299^2 .

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

It is not an unprimeable number, because it can be changed into a prime (2881649) 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 3 ways as a sum of consecutive naturals, for example, 7917 + ... + 8272.

2^2881642 is an apocalyptic number.

2881642 is a deficient number, since it is larger than the sum of its proper divisors (1489658).

2881642 is a wasteful number, since it uses less digits than its factorization.

2881642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16280.

The product of its digits is 6144, while the sum is 31.

The square root of 2881642 is about 1697.5399848015. The cubic root of 2881642 is about 142.3027660185.

The spelling of 2881642 in words is "two million, eight hundred eighty-one thousand, six hundred forty-two".