287680215 has 16 divisors (see below), whose sum is σ = 461260800. Its totient is φ = 153105312.

The previous prime is 287680201. The next prime is 287680223. The reversal of 287680215 is 512086782.

It is not a de Polignac number, because 287680215 - 2⁴ = 287680199 is a prime.

It is a super-2 number, since 2×287680215² = 165519812204892450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12835 + ... + 27204.

It is an arithmetic number, because the mean of its divisors is an integer number (28828800).

Almost surely, 2^287680215 is an apocalyptic number.

287680215 is a deficient number, since it is larger than the sum of its proper divisors (173580585).

287680215 is a wasteful number, since it uses less digits than its factorization.

287680215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40526.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 287680215 is about 16961.1383757105. The cubic root of 287680215 is about 660.1409363853.

The spelling of 287680215 in words is "two hundred eighty-seven million, six hundred eighty thousand, two hundred fifteen".