2886921 has 20 divisors (see below), whose sum is σ = 4464900. Its totient is φ = 1856736.

The previous prime is 2886911. The next prime is 2886941. The reversal of 2886921 is 1296882.

It can be written as a sum of positive squares in 2 ways, for example, as 2368521 + 518400 = 1539^2 + 720^2 .

It is not a de Polignac number, because 2886921 - 2⁹ = 2886409 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2886901) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1735 + ... + 2963.

It is an arithmetic number, because the mean of its divisors is an integer number (223245).

2^2886921 is an apocalyptic number.

It is an amenable number.

2886921 is a deficient number, since it is larger than the sum of its proper divisors (1577979).

2886921 is a wasteful number, since it uses less digits than its factorization.

2886921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1270 (or 1261 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 2886921 is about 1699.0941704332. The cubic root of 2886921 is about 142.3896097972.

The spelling of 2886921 in words is "two million, eight hundred eighty-six thousand, nine hundred twenty-one".