171916540 has 24 divisors (see below), whose sum is σ = 363786192. Its totient is φ = 68240640.

The previous prime is 171916523. The next prime is 171916543. The reversal of 171916540 is 45619171.

It is a junction number, because it is equal to n+sod(n) for n = 171916496 and 171916505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (171916543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30189 + ... + 35428.

It is an arithmetic number, because the mean of its divisors is an integer number (15157758).

Almost surely, 2^171916540 is an apocalyptic number.

171916540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171916540 is an abundant number, since it is smaller than the sum of its proper divisors (191869652).

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

171916540 is a wasteful number, since it uses less digits than its factorization.

171916540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65757 (or 65755 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 171916540 is about 13111.6947798521. The cubic root of 171916540 is about 556.0398113411.

The spelling of 171916540 in words is "one hundred seventy-one million, nine hundred sixteen thousand, five hundred forty".