2387881 has 8 divisors (see below), whose sum is σ = 2469600. Its totient is φ = 2307360.

The previous prime is 2387873. The next prime is 2387897. The reversal of 2387881 is 1887832.

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 2387881 - 2³ = 2387873 is a prime.

It is a super-2 number, since 2×2387881² = 11403951340322, 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 2387881.

It is not an unprimeable number, because it can be changed into a prime (2387821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5490 + ... + 5908.

It is an arithmetic number, because the mean of its divisors is an integer number (308700).

2^2387881 is an apocalyptic number.

It is an amenable number.

2387881 is a deficient number, since it is larger than the sum of its proper divisors (81719).

2387881 is a wasteful number, since it uses less digits than its factorization.

2387881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599.

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

The square root of 2387881 is about 1545.2769978227. The cubic root of 2387881 is about 133.6608524643.

The spelling of 2387881 in words is "two million, three hundred eighty-seven thousand, eight hundred eighty-one".