287680216 has 16 divisors (see below), whose sum is σ = 567790200. Its totient is φ = 136269504.

The previous prime is 287680201. The next prime is 287680223. The reversal of 287680216 is 612086782.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 946165 + ... + 946468.

Almost surely, 2^287680216 is an apocalyptic number.

It is an amenable number.

287680216 is a deficient number, since it is larger than the sum of its proper divisors (280109984).

287680216 is a wasteful number, since it uses less digits than its factorization.

287680216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892658 (or 1892654 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 287680216 is about 16961.1384051897. The cubic root of 287680216 is about 660.1409371502.

The spelling of 287680216 in words is "two hundred eighty-seven million, six hundred eighty thousand, two hundred sixteen".