388287 has 16 divisors (see below), whose sum is σ = 586080. Its totient is φ = 254016.

The previous prime is 388277. The next prime is 388301. The reversal of 388287 is 782883.

It is not a de Polignac number, because 388287 - 2⁷ = 388159 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1873 + ... + 2069.

It is an arithmetic number, because the mean of its divisors is an integer number (36630).

2³⁸⁸²⁸⁷ is an apocalyptic number.

388287 is a deficient number, since it is larger than the sum of its proper divisors (197793).

388287 is a wasteful number, since it uses less digits than its factorization.

388287 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279 (or 273 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 388287 is about 623.1267928761. The cubic root of 388287 is about 72.9543093077.

It can be divided in two parts, 3882 and 87, that added together give a square (3969 = 63²).

The spelling of 388287 in words is "three hundred eighty-eight thousand, two hundred eighty-seven".