387728163 has 12 divisors (see below), whose sum is σ = 592996248. Its totient is φ = 243280320.

The previous prime is 387728161. The next prime is 387728177. The reversal of 387728163 is 361827783.

It is not a de Polignac number, because 387728163 - 2¹ = 387728161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387728161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1266933 + ... + 1267238.

It is an arithmetic number, because the mean of its divisors is an integer number (49416354).

Almost surely, 2^387728163 is an apocalyptic number.

387728163 is a deficient number, since it is larger than the sum of its proper divisors (205268085).

387728163 is a wasteful number, since it uses less digits than its factorization.

387728163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2534194 (or 2534191 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 387728163 is about 19690.8141781898. The cubic root of 387728163 is about 729.1929299072.

The spelling of 387728163 in words is "three hundred eighty-seven million, seven hundred twenty-eight thousand, one hundred sixty-three".