284784394728 has 16 divisors (see below), whose sum is σ = 711960986880. Its totient is φ = 94928131568.

The previous prime is 284784394711. The next prime is 284784394781. The reversal of 284784394728 is 827493487482.

It is a super-2 number, since 2×284784394728² (a number of 24 digits) contains 22 as substring.

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, 5933008200 + ... + 5933008247.

It is an arithmetic number, because the mean of its divisors is an integer number (44497561680).

Almost surely, 2^284784394728 is an apocalyptic number.

It is an amenable number.

284784394728 is an abundant number, since it is smaller than the sum of its proper divisors (427176592152).

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

284784394728 is a wasteful number, since it uses less digits than its factorization.

284784394728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11866016456 (or 11866016452 counting only the distinct ones).

The product of its digits is 173408256, while the sum is 66.

The spelling of 284784394728 in words is "two hundred eighty-four billion, seven hundred eighty-four million, three hundred ninety-four thousand, seven hundred twenty-eight".