289180080 has 240 divisors, whose sum is σ = 1119553344. Its totient is φ = 65525760.

The previous prime is 289180079. The next prime is 289180091. The reversal of 289180080 is 80081982.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 912082 + ... + 912398.

Almost surely, 2^289180080 is an apocalyptic number.

289180080 is a gapful number since it is divisible by the number (20) 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 289180080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (559776672).

289180080 is an abundant number, since it is smaller than the sum of its proper divisors (830373264).

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

289180080 is a wasteful number, since it uses less digits than its factorization.

289180080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524 (or 515 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 289180080 is about 17005.2956457687. The cubic root of 289180080 is about 661.2861970863.

The spelling of 289180080 in words is "two hundred eighty-nine million, one hundred eighty thousand, eighty".