289442124 has 72 divisors (see below), whose sum is σ = 789013680. Its totient is φ = 89164800.

The previous prime is 289442123. The next prime is 289442129. The reversal of 289442124 is 421244982.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (289442123) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 22884 + ... + 33204.

Almost surely, 2^289442124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289442124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (394506840).

289442124 is an abundant number, since it is smaller than the sum of its proper divisors (499571556).

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

289442124 is a wasteful number, since it uses less digits than its factorization.

289442124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10391 (or 10386 counting only the distinct ones).

The product of its digits is 36864, while the sum is 36.

The square root of 289442124 is about 17012.9986774819. The cubic root of 289442124 is about 661.4858809244.

The spelling of 289442124 in words is "two hundred eighty-nine million, four hundred forty-two thousand, one hundred twenty-four".