289480 has 16 divisors (see below), whose sum is σ = 651420. Its totient is φ = 115776.

The previous prime is 289477. The next prime is 289489. The reversal of 289480 is 84982.

It can be written as a sum of positive squares in 2 ways, for example, as 289444 + 36 = 538^2 + 6^2 .

It is not an unprimeable number, because it can be changed into a prime (289489) 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, 3579 + ... + 3658.

2²⁸⁹⁴⁸⁰ is an apocalyptic number.

289480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289480 is an abundant number, since it is smaller than the sum of its proper divisors (361940).

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

289480 is a wasteful number, since it uses less digits than its factorization.

289480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7248 (or 7244 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 289480 is about 538.0334562088. The cubic root of 289480 is about 66.1514733378.

The spelling of 289480 in words is "two hundred eighty-nine thousand, four hundred eighty".