287243057 has 8 divisors (see below), whose sum is σ = 297570240. Its totient is φ = 276944080.

The previous prime is 287243039. The next prime is 287243059. The reversal of 287243057 is 750342782.

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

It is a cyclic number.

It is not a de Polignac number, because 287243057 - 2⁸ = 287242801 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 287243057.

It is not an unprimeable number, because it can be changed into a prime (287243059) 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, 14882 + ... + 28212.

It is an arithmetic number, because the mean of its divisors is an integer number (37196280).

Almost surely, 2^287243057 is an apocalyptic number.

It is an amenable number.

287243057 is a deficient number, since it is larger than the sum of its proper divisors (10327183).

287243057 is a wasteful number, since it uses less digits than its factorization.

287243057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14103.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 287243057 is about 16948.2464284657. The cubic root of 287243057 is about 659.8063841313.

The spelling of 287243057 in words is "two hundred eighty-seven million, two hundred forty-three thousand, fifty-seven".