288172 has 6 divisors (see below), whose sum is σ = 504308. Its totient is φ = 144084.

The previous prime is 288137. The next prime is 288179. The reversal of 288172 is 271882.

It is a self number, because there is not a number n which added to its sum of digits gives 288172.

It is not an unprimeable number, because it can be changed into a prime (288179) by changing a digit.

288172 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 as a sum of consecutive naturals, namely, 36018 + ... + 36025.

2²⁸⁸¹⁷² is an apocalyptic number.

It is an amenable number.

288172 is a deficient number, since it is larger than the sum of its proper divisors (216136).

288172 is a wasteful number, since it uses less digits than its factorization.

288172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72047 (or 72045 counting only the distinct ones).

The product of its digits is 1792, while the sum is 28.

The square root of 288172 is about 536.8165422190. The cubic root of 288172 is about 66.0516889238.

Subtracting from 288172 its reverse (271882), we obtain a triangular number (16290 = T₁₈₀).

The spelling of 288172 in words is "two hundred eighty-eight thousand, one hundred seventy-two".