289681123284 has 192 divisors, whose sum is σ = 896946176000. Its totient is φ = 80095638240.

The previous prime is 289681123247. The next prime is 289681123331. The reversal of 289681123284 is 482321186982.

289681123284 is a `hidden beast` number, since 289 + 6 + 81 + 1 + 2 + 3 + 284 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 289681123284.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1822017 + ... + 1974615.

Almost surely, 2^289681123284 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289681123284, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448473088000).

289681123284 is an abundant number, since it is smaller than the sum of its proper divisors (607265052716).

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

289681123284 is a wasteful number, since it uses less digits than its factorization.

289681123284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152662 (or 152642 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The spelling of 289681123284 in words is "two hundred eighty-nine billion, six hundred eighty-one million, one hundred twenty-three thousand, two hundred eighty-four".