288530 has 32 divisors (see below), whose sum is σ = 589248. Its totient is φ = 100800.

The previous prime is 288529. The next prime is 288539. The reversal of 288530 is 35882.

It is a self number, because there is not a number n which added to its sum of digits gives 288530.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (288539) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4700 + ... + 4760.

It is an arithmetic number, because the mean of its divisors is an integer number (18414).

2²⁸⁸⁵³⁰ is an apocalyptic number.

288530 is an abundant number, since it is smaller than the sum of its proper divisors (300718).

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

288530 is a wasteful number, since it uses less digits than its factorization.

288530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 288530 is about 537.1498859722. The cubic root of 288530 is about 66.0790299091.

It can be divided in two parts, 288 and 530, that added together give a palindrome (818).

The spelling of 288530 in words is "two hundred eighty-eight thousand, five hundred thirty".