287872215 has 16 divisors (see below), whose sum is σ = 466906848. Its totient is φ = 151428096.

The previous prime is 287872201. The next prime is 287872219. The reversal of 287872215 is 512278782.

It is not a de Polignac number, because 287872215 - 2⁷ = 287872087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287872219) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 130354 + ... + 132543.

It is an arithmetic number, because the mean of its divisors is an integer number (29181678).

Almost surely, 2^287872215 is an apocalyptic number.

287872215 is a deficient number, since it is larger than the sum of its proper divisors (179034633).

287872215 is a wasteful number, since it uses less digits than its factorization.

287872215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262978.

The product of its digits is 125440, while the sum is 42.

The square root of 287872215 is about 16966.7974290966. The cubic root of 287872215 is about 660.2877647805.

The spelling of 287872215 in words is "two hundred eighty-seven million, eight hundred seventy-two thousand, two hundred fifteen".