171386980 has 12 divisors (see below), whose sum is σ = 359912700. Its totient is φ = 68554784.

The previous prime is 171386947. The next prime is 171386983. The reversal of 171386980 is 89683171.

It can be written as a sum of positive squares in 2 ways, for example, as 52881984 + 118504996 = 7272^2 + 10886^2 .

It is not an unprimeable number, because it can be changed into a prime (171386983) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4284655 + ... + 4284694.

It is an arithmetic number, because the mean of its divisors is an integer number (29992725).

Almost surely, 2^171386980 is an apocalyptic number.

171386980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171386980 is an abundant number, since it is smaller than the sum of its proper divisors (188525720).

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

171386980 is a wasteful number, since it uses less digits than its factorization.

171386980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8569358 (or 8569356 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 171386980 is about 13091.4850188968. The cubic root of 171386980 is about 555.4682950652.

The spelling of 171386980 in words is "one hundred seventy-one million, three hundred eighty-six thousand, nine hundred eighty".