289648 has 20 divisors (see below), whose sum is σ = 575608. Its totient is φ = 141120.

The previous prime is 289643. The next prime is 289657. The reversal of 289648 is 846982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289643) by changing a digit.

289648 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 in 3 ways as a sum of consecutive naturals, for example, 478 + ... + 898.

2²⁸⁹⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

289648 is a deficient number, since it is larger than the sum of its proper divisors (285960).

289648 is a wasteful number, since it uses less digits than its factorization.

289648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 466 counting only the distinct ones).

The product of its digits is 27648, while the sum is 37.

The square root of 289648 is about 538.1895576839. The cubic root of 289648 is about 66.1642678870.

The spelling of 289648 in words is "two hundred eighty-nine thousand, six hundred forty-eight".