289031616 has 84 divisors (see below), whose sum is σ = 864516432. Its totient is φ = 92150784.

The previous prime is 289031573. The next prime is 289031621. The reversal of 289031616 is 616130982.

289031616 is a `hidden beast` number, since 2 + 8 + 9 + 0 + 31 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 2340 + ... + 24156.

Almost surely, 2^289031616 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 289031616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432258216).

289031616 is an abundant number, since it is smaller than the sum of its proper divisors (575484816).

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

289031616 is a wasteful number, since it uses less digits than its factorization.

289031616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21858 (or 21845 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 289031616 is about 17000.9298569225. The cubic root of 289031616 is about 661.1730104058.

The spelling of 289031616 in words is "two hundred eighty-nine million, thirty-one thousand, six hundred sixteen".