289293888 has 56 divisors (see below), whose sum is σ = 824309248. Its totient is φ = 89012736.

The previous prime is 289293859. The next prime is 289294001. The reversal of 289293888 is 888392982.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55456 + ... + 60447.

It is an arithmetic number, because the mean of its divisors is an integer number (14719808).

Almost surely, 2^289293888 is an apocalyptic number.

It is an amenable number.

289293888 is an abundant number, since it is smaller than the sum of its proper divisors (535015360).

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

289293888 is a wasteful number, since it uses less digits than its factorization.

289293888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115931 (or 115921 counting only the distinct ones).

The product of its digits is 3981312, while the sum is 57.

The square root of 289293888 is about 17008.6415683323. The cubic root of 289293888 is about 661.3729363352.

The spelling of 289293888 in words is "two hundred eighty-nine million, two hundred ninety-three thousand, eight hundred eighty-eight".