171428056 has 16 divisors (see below), whose sum is σ = 326697840. Its totient is φ = 84308640.

The previous prime is 171427999. The next prime is 171428069. The reversal of 171428056 is 650824171.

171428056 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 175156 + ... + 176131.

It is an arithmetic number, because the mean of its divisors is an integer number (20418615).

Almost surely, 2^171428056 is an apocalyptic number.

It is an amenable number.

171428056 is a deficient number, since it is larger than the sum of its proper divisors (155269784).

171428056 is a wasteful number, since it uses less digits than its factorization.

171428056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351354 (or 351350 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 171428056 is about 13093.0537308910. The cubic root of 171428056 is about 555.5126675396.

The spelling of 171428056 in words is "one hundred seventy-one million, four hundred twenty-eight thousand, fifty-six".