289825128 has 48 divisors (see below), whose sum is σ = 814020480. Its totient is φ = 96607728.

The previous prime is 289825097. The next prime is 289825141. The reversal of 289825128 is 821528982.

It is an unprimeable 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 11 ways as a sum of consecutive naturals, for example, 72600 + ... + 76487.

It is an arithmetic number, because the mean of its divisors is an integer number (16958760).

Almost surely, 2^289825128 is an apocalyptic number.

It is an amenable number.

289825128 is an abundant number, since it is smaller than the sum of its proper divisors (524195352).

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

289825128 is a wasteful number, since it uses less digits than its factorization.

289825128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149108 (or 149092 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 289825128 is about 17024.2511729591. The cubic root of 289825128 is about 661.7775225000. Note that the first 3 decimals are identical.

The spelling of 289825128 in words is "two hundred eighty-nine million, eight hundred twenty-five thousand, one hundred twenty-eight".