384647172 has 96 divisors (see below), whose sum is σ = 1162828800. Its totient is φ = 96100992.

The previous prime is 384647161. The next prime is 384647183. The reversal of 384647172 is 271746483.

It is an interprime number because it is at equal distance from previous prime (384647161) and next prime (384647183).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11479 + ... + 30017.

It is an arithmetic number, because the mean of its divisors is an integer number (12112800).

Almost surely, 2^384647172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 384647172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (581414400).

384647172 is an abundant number, since it is smaller than the sum of its proper divisors (778181628).

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

384647172 is a wasteful number, since it uses less digits than its factorization.

384647172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18585 (or 18583 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 384647172 is about 19612.4239195465. The cubic root of 384647172 is about 727.2563376666.

The spelling of 384647172 in words is "three hundred eighty-four million, six hundred forty-seven thousand, one hundred seventy-two".