287538068 has 12 divisors (see below), whose sum is σ = 532791252. Its totient is φ = 135312000.

The previous prime is 287538067. The next prime is 287538073. The reversal of 287538068 is 860835782.

It can be written as a sum of positive squares in 2 ways, for example, as 265429264 + 22108804 = 16292^2 + 4702^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287538061) 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, 2114183 + ... + 2114318.

It is an arithmetic number, because the mean of its divisors is an integer number (44399271).

Almost surely, 2^287538068 is an apocalyptic number.

It is an amenable number.

287538068 is a deficient number, since it is larger than the sum of its proper divisors (245253184).

287538068 is a wasteful number, since it uses less digits than its factorization.

287538068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4228522 (or 4228520 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The square root of 287538068 is about 16956.9474847332. The cubic root of 287538068 is about 660.0321900431.

The spelling of 287538068 in words is "two hundred eighty-seven million, five hundred thirty-eight thousand, sixty-eight".