384449220 has 96 divisors (see below), whose sum is σ = 1266451200. Its totient is φ = 96486912.

The previous prime is 384449189. The next prime is 384449239. The reversal of 384449220 is 22944483.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11760 + ... + 30119.

It is an arithmetic number, because the mean of its divisors is an integer number (13192200).

Almost surely, 2^384449220 is an apocalyptic number.

384449220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

384449220 is an abundant number, since it is smaller than the sum of its proper divisors (882001980).

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

384449220 is a wasteful number, since it uses less digits than its factorization.

384449220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41914 (or 41906 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 384449220 is about 19607.3766730789. The cubic root of 384449220 is about 727.1315596363.

The spelling of 384449220 in words is "three hundred eighty-four million, four hundred forty-nine thousand, two hundred twenty".