289431012 has 24 divisors (see below), whose sum is σ = 727288576. Its totient is φ = 89055648.

The previous prime is 289430989. The next prime is 289431017. The reversal of 289431012 is 210134982.

It is not an unprimeable number, because it can be changed into a prime (289431017) 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, 927508 + ... + 927819.

Almost surely, 2^289431012 is an apocalyptic number.

It is an amenable number.

289431012 is an abundant number, since it is smaller than the sum of its proper divisors (437857564).

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

289431012 is a wasteful number, since it uses less digits than its factorization.

289431012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855347 (or 1855345 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 289431012 is about 17012.6721005255. The cubic root of 289431012 is about 661.4774157604.

Adding to 289431012 its reverse (210134982), we get a palindrome (499565994).

The spelling of 289431012 in words is "two hundred eighty-nine million, four hundred thirty-one thousand, twelve".