289484880 has 40 divisors (see below), whose sum is σ = 897403872. Its totient is φ = 77195904.

The previous prime is 289484843. The next prime is 289484911. The reversal of 289484880 is 88484982.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×289484880² = 167602991497228800, which contains 22 as substring.

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, 602854 + ... + 603333.

Almost surely, 2^289484880 is an apocalyptic number.

289484880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289484880 is an abundant number, since it is smaller than the sum of its proper divisors (607918992).

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

289484880 is a wasteful number, since it uses less digits than its factorization.

289484880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206203 (or 1206197 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 51.

The square root of 289484880 is about 17014.2551996848. The cubic root of 289484880 is about 661.5184505880.

The spelling of 289484880 in words is "two hundred eighty-nine million, four hundred eighty-four thousand, eight hundred eighty".