284431320 has 48 divisors (see below), whose sum is σ = 924402960. Its totient is φ = 75848256.

The previous prime is 284431319. The next prime is 284431339. The reversal of 284431320 is 23134482.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 394684 + ... + 395403.

It is an arithmetic number, because the mean of its divisors is an integer number (19258395).

Almost surely, 2^284431320 is an apocalyptic number.

284431320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284431320 is an abundant number, since it is smaller than the sum of its proper divisors (639971640).

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

284431320 is a wasteful number, since it uses less digits than its factorization.

284431320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 790104 (or 790097 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 284431320 is about 16865.0917578292. The cubic root of 284431320 is about 657.6464381044.

The spelling of 284431320 in words is "two hundred eighty-four million, four hundred thirty-one thousand, three hundred twenty".