2887381 has 8 divisors (see below), whose sum is σ = 3311360. Its totient is φ = 2466288.

The previous prime is 2887363. The next prime is 2887439. The reversal of 2887381 is 1837882.

2887381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 2887381 - 2⁵ = 2887349 is a prime.

It is a super-2 number, since 2×2887381² = 16673938078322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2887381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2887081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2260 + ... + 3298.

It is an arithmetic number, because the mean of its divisors is an integer number (413920).

2^2887381 is an apocalyptic number.

It is an amenable number.

2887381 is a deficient number, since it is larger than the sum of its proper divisors (423979).

2887381 is a wasteful number, since it uses less digits than its factorization.

2887381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1443.

The product of its digits is 21504, while the sum is 37.

The square root of 2887381 is about 1699.2295312876. The cubic root of 2887381 is about 142.3971721496.

The spelling of 2887381 in words is "two million, eight hundred eighty-seven thousand, three hundred eighty-one".