289120812 has 48 divisors (see below), whose sum is σ = 703261440. Its totient is φ = 92359872.

The previous prime is 289120781. The next prime is 289120817. The reversal of 289120812 is 218021982.

It is not an unprimeable number, because it can be changed into a prime (289120817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24889 + ... + 34607.

It is an arithmetic number, because the mean of its divisors is an integer number (14651280).

Almost surely, 2^289120812 is an apocalyptic number.

It is an amenable number.

289120812 is an abundant number, since it is smaller than the sum of its proper divisors (414140628).

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

289120812 is a wasteful number, since it uses less digits than its factorization.

289120812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9830 (or 9828 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 289120812 is about 17003.5529228453. The cubic root of 289120812 is about 661.2410167173.

The spelling of 289120812 in words is "two hundred eighty-nine million, one hundred twenty thousand, eight hundred twelve".