387287 has 4 divisors (see below), whose sum is σ = 389136. Its totient is φ = 385440.

The previous prime is 387281. The next prime is 387307. The reversal of 387287 is 782783.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 387287 - 2⁸ = 387031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 387287.

It is not an unprimeable number, because it can be changed into a prime (387281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 563 + ... + 1044.

It is an arithmetic number, because the mean of its divisors is an integer number (97284).

2³⁸⁷²⁸⁷ is an apocalyptic number.

387287 is a deficient number, since it is larger than the sum of its proper divisors (1849).

387287 is a wasteful number, since it uses less digits than its factorization.

387287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848.

The product of its digits is 18816, while the sum is 35.

The square root of 387287 is about 622.3238706654. The cubic root of 387287 is about 72.8916262680.

The spelling of 387287 in words is "three hundred eighty-seven thousand, two hundred eighty-seven".