171938928 has 40 divisors (see below), whose sum is σ = 507630208. Its totient is φ = 49125312.

The previous prime is 171938909. The next prime is 171938929. The reversal of 171938928 is 829839171.

171938928 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171938929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 255526 + ... + 256197.

Almost surely, 2^171938928 is an apocalyptic number.

It is an amenable number.

171938928 is an abundant number, since it is smaller than the sum of its proper divisors (335691280).

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

171938928 is a wasteful number, since it uses less digits than its factorization.

171938928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511741 (or 511735 counting only the distinct ones).

The product of its digits is 217728, while the sum is 48.

The square root of 171938928 is about 13112.5484937140. The cubic root of 171938928 is about 556.0639472367.

The spelling of 171938928 in words is "one hundred seventy-one million, nine hundred thirty-eight thousand, nine hundred twenty-eight".