289925888 has 144 divisors (see below), whose sum is σ = 725243904. Its totient is φ = 112803840.

The previous prime is 289925869. The next prime is 289925893. The reversal of 289925888 is 888529982.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 944231 + ... + 944537.

It is an arithmetic number, because the mean of its divisors is an integer number (5036416).

Almost surely, 2^289925888 is an apocalyptic number.

289925888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289925888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (362621952).

289925888 is an abundant number, since it is smaller than the sum of its proper divisors (435318016).

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

289925888 is a wasteful number, since it uses less digits than its factorization.

289925888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 364 counting only the distinct ones).

The product of its digits is 6635520, while the sum is 59.

The square root of 289925888 is about 17027.2102236391. The cubic root of 289925888 is about 661.8542043458.

The spelling of 289925888 in words is "two hundred eighty-nine million, nine hundred twenty-five thousand, eight hundred eighty-eight".