289616860 has 48 divisors (see below), whose sum is σ = 656222112. Its totient is φ = 106732800.

The previous prime is 289616843. The next prime is 289616861. The reversal of 289616860 is 68616982.

It is a self number, because there is not a number n which added to its sum of digits gives 289616860.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289616861) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264915 + ... + 266005.

It is an arithmetic number, because the mean of its divisors is an integer number (13671294).

Almost surely, 2^289616860 is an apocalyptic number.

289616860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289616860 is an abundant number, since it is smaller than the sum of its proper divisors (366605252).

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

289616860 is a wasteful number, since it uses less digits than its factorization.

289616860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134 (or 2132 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 289616860 is about 17018.1332701328. The cubic root of 289616860 is about 661.6189669953.

The spelling of 289616860 in words is "two hundred eighty-nine million, six hundred sixteen thousand, eight hundred sixty".