2882861 has 4 divisors (see below), whose sum is σ = 2982300. Its totient is φ = 2783424.

The previous prime is 2882857. The next prime is 2882863. The reversal of 2882861 is 1682882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1705636 + 1177225 = 1306^2 + 1085^2 .

It is a cyclic number.

It is not a de Polignac number, because 2882861 - 2² = 2882857 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2882863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49676 + ... + 49733.

It is an arithmetic number, because the mean of its divisors is an integer number (745575).

2^2882861 is an apocalyptic number.

It is an amenable number.

2882861 is a deficient number, since it is larger than the sum of its proper divisors (99439).

2882861 is an equidigital number, since it uses as much as digits as its factorization.

2882861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99438.

The product of its digits is 12288, while the sum is 35.

The square root of 2882861 is about 1697.8989958181. The cubic root of 2882861 is about 142.3228289569.

The spelling of 2882861 in words is "two million, eight hundred eighty-two thousand, eight hundred sixty-one".