289024428 has 192 divisors, whose sum is σ = 899297280. Its totient is φ = 69984000.

The previous prime is 289024391. The next prime is 289024451. The reversal of 289024428 is 824420982.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1773075 + ... + 1773237.

It is an arithmetic number, because the mean of its divisors is an integer number (4683840).

Almost surely, 2^289024428 is an apocalyptic number.

289024428 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 289024428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449648640).

289024428 is an abundant number, since it is smaller than the sum of its proper divisors (610272852).

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

289024428 is a wasteful number, since it uses less digits than its factorization.

289024428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 39.

The square root of 289024428 is about 17000.7184554065. The cubic root of 289024428 is about 661.1675294010.

The spelling of 289024428 in words is "two hundred eighty-nine million, twenty-four thousand, four hundred twenty-eight".