284778896 has 30 divisors (see below), whose sum is σ = 570162726. Its totient is φ = 137788800.

The previous prime is 284778889. The next prime is 284778919. The reversal of 284778896 is 698877482.

It can be written as a sum of positive squares in only one way, i.e., 284394496 + 384400 = 16864^2 + 620^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6116 + ... + 24636.

Almost surely, 2^284778896 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 284778896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (285081363).

284778896 is an abundant number, since it is smaller than the sum of its proper divisors (285383830).

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

284778896 is a wasteful number, since it uses less digits than its factorization.

284778896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18591 (or 18554 counting only the distinct ones).

The product of its digits is 10838016, while the sum is 59.

The square root of 284778896 is about 16875.3932102337. The cubic root of 284778896 is about 657.9142110911.

It can be divided in two parts, 28477 and 8896, that added together give a palindrome (37373).

The spelling of 284778896 in words is "two hundred eighty-four million, seven hundred seventy-eight thousand, eight hundred ninety-six".