284147984 has 20 divisors (see below), whose sum is σ = 568296960. Its totient is φ = 137490720.

The previous prime is 284147977. The next prime is 284147987. The reversal of 284147984 is 489741482.

284147984 is an admirable number.

It is a super-2 number, since 2×284147984² = 161480153622528512, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (284147987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285944 + ... + 286935.

It is an arithmetic number, because the mean of its divisors is an integer number (28414848).

Almost surely, 2^284147984 is an apocalyptic number.

It is an amenable number.

284147984 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

284147984 is a wasteful number, since it uses less digits than its factorization.

284147984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 572918 (or 572912 counting only the distinct ones).

The product of its digits is 516096, while the sum is 47.

The square root of 284147984 is about 16856.6895919691. The cubic root of 284147984 is about 657.4279942543.

The spelling of 284147984 in words is "two hundred eighty-four million, one hundred forty-seven thousand, nine hundred eighty-four".