289041280 has 64 divisors (see below), whose sum is σ = 753824880. Its totient is φ = 105103360.

The previous prime is 289041271. The next prime is 289041301. The reversal of 289041280 is 82140982.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13489 + ... + 27568.

Almost surely, 2^289041280 is an apocalyptic number.

289041280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289041280 is an abundant number, since it is smaller than the sum of its proper divisors (464783600).

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

289041280 is a wasteful number, since it uses less digits than its factorization.

289041280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41087 (or 41075 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 289041280 is about 17001.2140742948. The cubic root of 289041280 is about 661.1803792706.

The spelling of 289041280 in words is "two hundred eighty-nine million, forty-one thousand, two hundred eighty".