288081 has 6 divisors (see below), whose sum is σ = 416130. Its totient is φ = 192048.

The previous prime is 288077. The next prime is 288089. The reversal of 288081 is 180882.

288081 = 90² + 91² + ... + 116².

It can be written as a sum of positive squares in only one way, i.e., 147456 + 140625 = 384^2 + 375^2 .

It is not a de Polignac number, because 288081 - 2² = 288077 is a prime.

It is a super-2 number, since 2×288081² = 165981325122, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 288081.

It is not an unprimeable number, because it can be changed into a prime (288089) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 15996 + ... + 16013.

It is an arithmetic number, because the mean of its divisors is an integer number (69355).

2²⁸⁸⁰⁸¹ is an apocalyptic number.

It is an amenable number.

288081 is a deficient number, since it is larger than the sum of its proper divisors (128049).

288081 is a wasteful number, since it uses less digits than its factorization.

288081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32015 (or 32012 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 27.

The square root of 288081 is about 536.7317765886. The cubic root of 288081 is about 66.0447355112.

The spelling of 288081 in words is "two hundred eighty-eight thousand, eighty-one".