289270 has 8 divisors (see below), whose sum is σ = 520704. Its totient is φ = 115704.

The previous prime is 289253. The next prime is 289273. The reversal of 289270 is 72982.

289270 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289273) by changing a digit.

289270 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14454 + ... + 14473.

It is an arithmetic number, because the mean of its divisors is an integer number (65088).

2²⁸⁹²⁷⁰ is an apocalyptic number.

289270 is a deficient number, since it is larger than the sum of its proper divisors (231434).

289270 is a wasteful number, since it uses less digits than its factorization.

289270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28934.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 289270 is about 537.8382656524. The cubic root of 289270 is about 66.1354731881.

It can be divided in two parts, 28 and 9270, that multiplied together give a triangular number (259560 = T₇₂₀).

The spelling of 289270 in words is "two hundred eighty-nine thousand, two hundred seventy".