288138 has 8 divisors (see below), whose sum is σ = 576288. Its totient is φ = 96044.

The previous prime is 288137. The next prime is 288179. The reversal of 288138 is 831882.

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

288138 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (288137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24006 + ... + 24017.

It is an arithmetic number, because the mean of its divisors is an integer number (72036).

2²⁸⁸¹³⁸ is an apocalyptic number.

288138 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

288138 is a wasteful number, since it uses less digits than its factorization.

288138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48028.

The product of its digits is 3072, while the sum is 30.

The square root of 288138 is about 536.7848731103. The cubic root of 288138 is about 66.0490911168.

The spelling of 288138 in words is "two hundred eighty-eight thousand, one hundred thirty-eight".