287887071 has 8 divisors (see below), whose sum is σ = 385077040. Its totient is φ = 191310912.

The previous prime is 287887063. The next prime is 287887073. The reversal of 287887071 is 170788782.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 287887071 - 2³ = 287887063 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 287887071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (287887073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152356 + ... + 154233.

It is an arithmetic number, because the mean of its divisors is an integer number (48134630).

Almost surely, 2^287887071 is an apocalyptic number.

287887071 is a deficient number, since it is larger than the sum of its proper divisors (97189969).

287887071 is a wasteful number, since it uses less digits than its factorization.

287887071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306905.

The product of its (nonzero) digits is 351232, while the sum is 48.

The square root of 287887071 is about 16967.2352196815. The cubic root of 287887071 is about 660.2991229061.

The spelling of 287887071 in words is "two hundred eighty-seven million, eight hundred eighty-seven thousand, seventy-one".