288858 has 16 divisors (see below), whose sum is σ = 596736. Its totient is φ = 93120.

The previous prime is 288853. The next prime is 288877. The reversal of 288858 is 858882.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 288858.

It is not an unprimeable number, because it can be changed into a prime (288851) by changing a digit.

288858 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 591 + ... + 962.

It is an arithmetic number, because the mean of its divisors is an integer number (37296).

2²⁸⁸⁸⁵⁸ is an apocalyptic number.

288858 is an abundant number, since it is smaller than the sum of its proper divisors (307878).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

288858 is a wasteful number, since it uses less digits than its factorization.

288858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1589.

The product of its digits is 40960, while the sum is 39.

The square root of 288858 is about 537.4551144049. The cubic root of 288858 is about 66.1040599049.

The spelling of 288858 in words is "two hundred eighty-eight thousand, eight hundred fifty-eight".