289632812 has 24 divisors (see below), whose sum is σ = 579720960. Its totient is φ = 124030800.

The previous prime is 289632803. The next prime is 289632817. The reversal of 289632812 is 218236982.

It is a self number, because there is not a number n which added to its sum of digits gives 289632812.

It is not an unprimeable number, because it can be changed into a prime (289632817) 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, 40937 + ... + 47487.

It is an arithmetic number, because the mean of its divisors is an integer number (24155040).

Almost surely, 2^289632812 is an apocalyptic number.

It is an amenable number.

289632812 is an abundant number, since it is smaller than the sum of its proper divisors (290088148).

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

289632812 is a wasteful number, since it uses less digits than its factorization.

289632812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8141 (or 8139 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 289632812 is about 17018.6019402300. The cubic root of 289632812 is about 661.6311140229.

The spelling of 289632812 in words is "two hundred eighty-nine million, six hundred thirty-two thousand, eight hundred twelve".