287397 has 12 divisors (see below), whose sum is σ = 453024. Its totient is φ = 174120.

The previous prime is 287393. The next prime is 287437. The reversal of 287397 is 793782.

287397 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 287397 - 2² = 287393 is a prime.

287397 is strictly pandigital in base 7.

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 287397.

It is not an unprimeable number, because it can be changed into a prime (287393) 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, 1353 + ... + 1550.

It is an arithmetic number, because the mean of its divisors is an integer number (37752).

2²⁸⁷³⁹⁷ is an apocalyptic number.

It is an amenable number.

287397 is a deficient number, since it is larger than the sum of its proper divisors (165627).

287397 is a wasteful number, since it uses less digits than its factorization.

287397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2920 (or 2917 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The square root of 287397 is about 536.0942081388. The cubic root of 287397 is about 65.9924233727.

The spelling of 287397 in words is "two hundred eighty-seven thousand, three hundred ninety-seven".