287972564 has 12 divisors (see below), whose sum is σ = 549765888. Its totient is φ = 130896600.

The previous prime is 287972557. The next prime is 287972579. The reversal of 287972564 is 465279782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3272372 + ... + 3272459.

It is an arithmetic number, because the mean of its divisors is an integer number (45813824).

Almost surely, 2^287972564 is an apocalyptic number.

It is an amenable number.

287972564 is a deficient number, since it is larger than the sum of its proper divisors (261793324).

287972564 is a wasteful number, since it uses less digits than its factorization.

287972564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6544846 (or 6544844 counting only the distinct ones).

The product of its digits is 1693440, while the sum is 50.

The square root of 287972564 is about 16969.7543883228. The cubic root of 287972564 is about 660.3644788176.

The spelling of 287972564 in words is "two hundred eighty-seven million, nine hundred seventy-two thousand, five hundred sixty-four".