284397988 has 12 divisors (see below), whose sum is σ = 568796032. Its totient is φ = 121884840.

The previous prime is 284397979. The next prime is 284397991. The reversal of 284397988 is 889793482.

284397988 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

284397988 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 5078508 + ... + 5078563.

Almost surely, 2^284397988 is an apocalyptic number.

284397988 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

284397988 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.

284397988 is a wasteful number, since it uses less digits than its factorization.

284397988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10157082 (or 10157080 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 58.

The square root of 284397988 is about 16864.1035338378. The cubic root of 284397988 is about 657.6207476291.

The spelling of 284397988 in words is "two hundred eighty-four million, three hundred ninety-seven thousand, nine hundred eighty-eight".