284379820 has 36 divisors (see below), whose sum is σ = 624314880. Its totient is φ = 108802144.

The previous prime is 284379803. The next prime is 284379841. The reversal of 284379820 is 28973482.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2860 + ... + 24019.

It is an arithmetic number, because the mean of its divisors is an integer number (17342080).

Almost surely, 2^284379820 is an apocalyptic number.

284379820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

284379820 is an abundant number, since it is smaller than the sum of its proper divisors (339935060).

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

284379820 is a wasteful number, since it uses less digits than its factorization.

284379820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26934 (or 26909 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 284379820 is about 16863.5648663027. The cubic root of 284379820 is about 657.6067438871.

The spelling of 284379820 in words is "two hundred eighty-four million, three hundred seventy-nine thousand, eight hundred twenty".