2881487 has 4 divisors (see below), whose sum is σ = 3293136. Its totient is φ = 2469840.

The previous prime is 2881471. The next prime is 2881499. The reversal of 2881487 is 7841882.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7841882 = 2 ⋅3920941.

It is a cyclic number.

It is not a de Polignac number, because 2881487 - 2⁴ = 2881471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2881487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2881427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 205814 + ... + 205827.

It is an arithmetic number, because the mean of its divisors is an integer number (823284).

2^2881487 is an apocalyptic number.

2881487 is a deficient number, since it is larger than the sum of its proper divisors (411649).

2881487 is an equidigital number, since it uses as much as digits as its factorization.

2881487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 411648.

The product of its digits is 28672, while the sum is 38.

The square root of 2881487 is about 1697.4943298874. The cubic root of 2881487 is about 142.3002145422.

It can be divided in two parts, 288148 and 7, that multiplied together give a triangular number (2017036 = T₂₀₀₈).

The spelling of 2881487 in words is "two million, eight hundred eighty-one thousand, four hundred eighty-seven".