289335880 has 16 divisors (see below), whose sum is σ = 651005820. Its totient is φ = 115734336.

The previous prime is 289335877. The next prime is 289335881. The reversal of 289335880 is 88533982.

It is a happy number.

289335880 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 284866884 + 4468996 = 16878^2 + 2114^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 289335880.

It is not an unprimeable number, because it can be changed into a prime (289335881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3616659 + ... + 3616738.

Almost surely, 2^289335880 is an apocalyptic number.

289335880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289335880 is an abundant number, since it is smaller than the sum of its proper divisors (361669940).

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

289335880 is a wasteful number, since it uses less digits than its factorization.

289335880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7233408 (or 7233404 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 289335880 is about 17009.8759548681. The cubic root of 289335880 is about 661.4049349703.

The spelling of 289335880 in words is "two hundred eighty-nine million, three hundred thirty-five thousand, eight hundred eighty".