288857 has 8 divisors (see below), whose sum is σ = 317760. Its totient is φ = 261360.

The previous prime is 288853. The next prime is 288877. The reversal of 288857 is 758882.

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 288857 - 2² = 288853 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 288857.

It is not an unprimeable number, because it can be changed into a prime (288851) 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, 107 + ... + 767.

It is an arithmetic number, because the mean of its divisors is an integer number (39720).

2²⁸⁸⁸⁵⁷ is an apocalyptic number.

It is an amenable number.

288857 is a deficient number, since it is larger than the sum of its proper divisors (28903).

288857 is a wasteful number, since it uses less digits than its factorization.

288857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703.

The product of its digits is 35840, while the sum is 38.

The square root of 288857 is about 537.4541840939. The cubic root of 288857 is about 66.1039836227.

The spelling of 288857 in words is "two hundred eighty-eight thousand, eight hundred fifty-seven".