289912832 has 96 divisors (see below), whose sum is σ = 670466160. Its totient is φ = 123863040.

The previous prime is 289912801. The next prime is 289912853. The reversal of 289912832 is 238219982.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 382598 + ... + 383354.

Almost surely, 2^289912832 is an apocalyptic number.

289912832 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289912832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (335233080).

289912832 is an abundant number, since it is smaller than the sum of its proper divisors (380553328).

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

289912832 is a wasteful number, since it uses less digits than its factorization.

289912832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 787 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 289912832 is about 17026.8268329716. The cubic root of 289912832 is about 661.8442692801.

The spelling of 289912832 in words is "two hundred eighty-nine million, nine hundred twelve thousand, eight hundred thirty-two".