287087842 has 8 divisors (see below), whose sum is σ = 430794432. Its totient is φ = 143489700.

The previous prime is 287087839. The next prime is 287087851. The reversal of 287087842 is 248780782.

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

It is a junction number, because it is equal to n+sod(n) for n = 287087792 and 287087801.

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, 20134 + ... + 31297.

It is an arithmetic number, because the mean of its divisors is an integer number (53849304).

Almost surely, 2^287087842 is an apocalyptic number.

287087842 is a deficient number, since it is larger than the sum of its proper divisors (143706590).

287087842 is a wasteful number, since it uses less digits than its factorization.

287087842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54224.

The product of its (nonzero) digits is 401408, while the sum is 46.

The square root of 287087842 is about 16943.6667224069. Note that the first 3 decimals coincide. The cubic root of 287087842 is about 659.6875181310.

The spelling of 287087842 in words is "two hundred eighty-seven million, eighty-seven thousand, eight hundred forty-two".