171994000 has 80 divisors (see below), whose sum is σ = 434079360. Its totient is φ = 65788800.

The previous prime is 171993989. The next prime is 171994001. The reversal of 171994000 is 499171.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (171994001) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44131 + ... + 47869.

It is an arithmetic number, because the mean of its divisors is an integer number (5425992).

Almost surely, 2^171994000 is an apocalyptic number.

171994000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171994000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (217039680).

171994000 is an abundant number, since it is smaller than the sum of its proper divisors (262085360).

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

171994000 is a wasteful number, since it uses less digits than its factorization.

171994000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3785 (or 3769 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 171994000 is about 13114.6482987536. The cubic root of 171994000 is about 556.1233099516.

The spelling of 171994000 in words is "one hundred seventy-one million, nine hundred ninety-four thousand".