384327820 has 36 divisors (see below), whose sum is σ = 851818464. Its totient is φ = 145637280.

The previous prime is 384327817. The next prime is 384327833. The reversal of 384327820 is 28723483.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 384327820.

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, 19396 + ... + 33835.

It is an arithmetic number, because the mean of its divisors is an integer number (23661624).

Almost surely, 2^384327820 is an apocalyptic number.

It is an amenable number.

384327820 is an abundant number, since it is smaller than the sum of its proper divisors (467490644).

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

384327820 is a wasteful number, since it uses less digits than its factorization.

384327820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53278 (or 53257 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The square root of 384327820 is about 19604.2806549998. The cubic root of 384327820 is about 727.0550145774.

The spelling of 384327820 in words is "three hundred eighty-four million, three hundred twenty-seven thousand, eight hundred twenty".