289408480 has 24 divisors (see below), whose sum is σ = 683727912. Its totient is φ = 115763328.

The previous prime is 289408439. The next prime is 289408507. The reversal of 289408480 is 84804982.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 904242 + ... + 904561.

It is an arithmetic number, because the mean of its divisors is an integer number (28488663).

Almost surely, 2^289408480 is an apocalyptic number.

289408480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289408480 is an abundant number, since it is smaller than the sum of its proper divisors (394319432).

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

289408480 is a wasteful number, since it uses less digits than its factorization.

289408480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808818 (or 1808810 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 289408480 is about 17012.0098753792. The cubic root of 289408480 is about 661.4602501316.

The spelling of 289408480 in words is "two hundred eighty-nine million, four hundred eight thousand, four hundred eighty".