289028232 has 24 divisors (see below), whose sum is σ = 782784990. Its totient is φ = 96342720.

The previous prime is 289028231. The next prime is 289028261. The reversal of 289028232 is 232820982.

It can be written as a sum of positive squares in only one way, i.e., 276024996 + 13003236 = 16614^2 + 3606^2 .

It is a tau number, because it is divible by the number of its divisors (24).

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 (289028231) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 2007069 + ... + 2007212.

Almost surely, 2^289028232 is an apocalyptic number.

It is an amenable number.

289028232 is an abundant number, since it is smaller than the sum of its proper divisors (493756758).

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

289028232 is a wasteful number, since it uses less digits than its factorization.

289028232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4014293 (or 4014286 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 289028232 is about 17000.8303326632. The cubic root of 289028232 is about 661.1704300442.

The spelling of 289028232 in words is "two hundred eighty-nine million, twenty-eight thousand, two hundred thirty-two".