289215012 has 12 divisors (see below), whose sum is σ = 674835056. Its totient is φ = 96405000.

The previous prime is 289215007. The next prime is 289215029. The reversal of 289215012 is 210512982.

289215012 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 12050614 + ... + 12050637.

Almost surely, 2^289215012 is an apocalyptic number.

It is an amenable number.

289215012 is an abundant number, since it is smaller than the sum of its proper divisors (385620044).

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

289215012 is a wasteful number, since it uses less digits than its factorization.

289215012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24101258 (or 24101256 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 289215012 is about 17006.3227065700. The cubic root of 289215012 is about 661.3128230782.

Adding to 289215012 its reverse (210512982), we get a palindrome (499727994).

It can be divided in two parts, 28921 and 5012, that added together give a palindrome (33933).

The spelling of 289215012 in words is "two hundred eighty-nine million, two hundred fifteen thousand, twelve".