2187387 has 12 divisors (see below), whose sum is σ = 3173040. Its totient is φ = 1452048.

The previous prime is 2187379. The next prime is 2187389. The reversal of 2187387 is 7837812.

It is not a de Polignac number, because 2187387 - 2³ = 2187379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2187389) 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, 2893 + ... + 3569.

It is an arithmetic number, because the mean of its divisors is an integer number (264420).

2^2187387 is an apocalyptic number.

2187387 is a deficient number, since it is larger than the sum of its proper divisors (985653).

2187387 is a wasteful number, since it uses less digits than its factorization.

2187387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042 (or 1039 counting only the distinct ones).

The product of its digits is 18816, while the sum is 36.

The square root of 2187387 is about 1478.9817443092. The cubic root of 2187387 is about 129.8101172627.

The spelling of 2187387 in words is "two million, one hundred eighty-seven thousand, three hundred eighty-seven".