171994944 has 224 divisors, whose sum is σ = 533716992. Its totient is φ = 48384000.

The previous prime is 171994931. The next prime is 171994997. The reversal of 171994944 is 449499171.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 171994893 and 171994902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2422429 + ... + 2422499.

Almost surely, 2^171994944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 171994944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266858496).

171994944 is an abundant number, since it is smaller than the sum of its proper divisors (361722048).

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

171994944 is a wasteful number, since it uses less digits than its factorization.

171994944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 155 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 171994944 is about 13114.6842889945. The cubic root of 171994944 is about 556.1243273891.

The spelling of 171994944 in words is "one hundred seventy-one million, nine hundred ninety-four thousand, nine hundred forty-four".