287667872 has 12 divisors (see below), whose sum is σ = 566346186. Its totient is φ = 143833920.

The previous prime is 287667841. The next prime is 287667881. The reversal of 287667872 is 278766782.

It can be written as a sum of positive squares in only one way, i.e., 257153296 + 30514576 = 16036^2 + 5524^2 .

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4494779 + ... + 4494842.

Almost surely, 2^287667872 is an apocalyptic number.

It is an amenable number.

287667872 is a deficient number, since it is larger than the sum of its proper divisors (278678314).

287667872 is an equidigital number, since it uses as much as digits as its factorization.

287667872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8989631 (or 8989623 counting only the distinct ones).

The product of its digits is 3161088, while the sum is 53.

The square root of 287667872 is about 16960.7745106171. The cubic root of 287667872 is about 660.1314950732.

The spelling of 287667872 in words is "two hundred eighty-seven million, six hundred sixty-seven thousand, eight hundred seventy-two".