384280218 has 48 divisors (see below), whose sum is σ = 984372480. Its totient is φ = 106007328.

The previous prime is 384280201. The next prime is 384280231. The reversal of 384280218 is 812082483.

It is a happy number.

It is a super-2 number, since 2×384280218² = 295342571892255048, which contains 22 as substring.

It is a Curzon number.

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 23 ways as a sum of consecutive naturals, for example, 48930 + ... + 56237.

It is an arithmetic number, because the mean of its divisors is an integer number (20507760).

Almost surely, 2^384280218 is an apocalyptic number.

384280218 is an abundant number, since it is smaller than the sum of its proper divisors (600092262).

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

384280218 is a wasteful number, since it uses less digits than its factorization.

384280218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105211 (or 105208 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 384280218 is about 19603.0665458239. The cubic root of 384280218 is about 727.0249961921.

The spelling of 384280218 in words is "three hundred eighty-four million, two hundred eighty thousand, two hundred eighteen".