289171488 has 48 divisors (see below), whose sum is σ = 799031520. Its totient is φ = 91316736.

The previous prime is 289171471. The next prime is 289171489. The reversal of 289171488 is 884171982.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (289171489) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77445 + ... + 81092.

It is an arithmetic number, because the mean of its divisors is an integer number (16646490).

Almost surely, 2^289171488 is an apocalyptic number.

It is an amenable number.

289171488 is an abundant number, since it is smaller than the sum of its proper divisors (509860032).

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

289171488 is a wasteful number, since it uses less digits than its factorization.

289171488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158569 (or 158561 counting only the distinct ones).

The product of its digits is 258048, while the sum is 48.

The square root of 289171488 is about 17005.0430167054. The cubic root of 289171488 is about 661.2796477333.

The spelling of 289171488 in words is "two hundred eighty-nine million, one hundred seventy-one thousand, four hundred eighty-eight".