171045438 has 8 divisors (see below), whose sum is σ = 342090888. Its totient is φ = 57015144.

The previous prime is 171045397. The next prime is 171045473. The reversal of 171045438 is 834540171.

It is a sphenic number, since it is the product of 3 distinct primes.

171045438 is an admirable number.

It is a super-2 number, since 2×171045438² = 58513083721223688, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 171045399 and 171045408.

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, 14253781 + ... + 14253792.

It is an arithmetic number, because the mean of its divisors is an integer number (42761361).

Almost surely, 2^171045438 is an apocalyptic number.

171045438 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

171045438 is a wasteful number, since it uses less digits than its factorization.

171045438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28507578.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 171045438 is about 13078.4340805771. The cubic root of 171045438 is about 555.0990684282.

The spelling of 171045438 in words is "one hundred seventy-one million, forty-five thousand, four hundred thirty-eight".