284387328 has 192 divisors, whose sum is σ = 871416000. Its totient is φ = 91570176.

The previous prime is 284387317. The next prime is 284387351. The reversal of 284387328 is 823783482.

It is a tau number, because it is divible by the number of its divisors (192).

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, 2045883 + ... + 2046021.

It is an arithmetic number, because the mean of its divisors is an integer number (4538625).

Almost surely, 2^284387328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 284387328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (435708000).

284387328 is an abundant number, since it is smaller than the sum of its proper divisors (587028672).

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

284387328 is a wasteful number, since it uses less digits than its factorization.

284387328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207 (or 181 counting only the distinct ones).

The product of its digits is 516096, while the sum is 45.

The square root of 284387328 is about 16863.7874749417. The cubic root of 284387328 is about 657.6125310628.

The spelling of 284387328 in words is "two hundred eighty-four million, three hundred eighty-seven thousand, three hundred twenty-eight".