171889416 has 24 divisors (see below), whose sum is σ = 465534030. Its totient is φ = 57296448.

The previous prime is 171889391. The next prime is 171889429. The reversal of 171889416 is 614988171.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 162562500 + 9326916 = 12750^2 + 3054^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 1193605 + ... + 1193748.

Almost surely, 2^171889416 is an apocalyptic number.

It is an amenable number.

171889416 is an abundant number, since it is smaller than the sum of its proper divisors (293644614).

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

171889416 is a wasteful number, since it uses less digits than its factorization.

171889416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387365 (or 2387358 counting only the distinct ones).

The product of its digits is 96768, while the sum is 45.

The square root of 171889416 is about 13110.6603952661. The cubic root of 171889416 is about 556.0105668851.

The spelling of 171889416 in words is "one hundred seventy-one million, eight hundred eighty-nine thousand, four hundred sixteen".