284030920 has 16 divisors (see below), whose sum is σ = 639069660. Its totient is φ = 113612352.

The previous prime is 284030899. The next prime is 284030939. The reversal of 284030920 is 29030482.

It can be written as a sum of positive squares in 2 ways, for example, as 280428516 + 3602404 = 16746^2 + 1898^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3550347 + ... + 3550426.

Almost surely, 2^284030920 is an apocalyptic number.

284030920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284030920 is an abundant number, since it is smaller than the sum of its proper divisors (355038740).

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

284030920 is a wasteful number, since it uses less digits than its factorization.

284030920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100784 (or 7100780 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 284030920 is about 16853.2169036063. The cubic root of 284030920 is about 657.3376989078.

The spelling of 284030920 in words is "two hundred eighty-four million, thirty thousand, nine hundred twenty".