2487881 has 12 divisors (see below), whose sum is σ = 2832900. Its totient is φ = 2180640.

The previous prime is 2487833. The next prime is 2487883. The reversal of 2487881 is 1887842.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 774400 + 1713481 = 880^2 + 1309^2 .

It is not a de Polignac number, because 2487881 - 2¹⁰ = 2486857 is a prime.

It is a super-2 number, since 2×2487881² = 12379103740322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2487883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3155 + ... + 3863.

It is an arithmetic number, because the mean of its divisors is an integer number (236075).

2^2487881 is an apocalyptic number.

It is an amenable number.

2487881 is a deficient number, since it is larger than the sum of its proper divisors (345019).

2487881 is a wasteful number, since it uses less digits than its factorization.

2487881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760 (or 749 counting only the distinct ones).

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

The square root of 2487881 is about 1577.3018100541. The cubic root of 2487881 is about 135.5012186544.

The spelling of 2487881 in words is "two million, four hundred eighty-seven thousand, eight hundred eighty-one".