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171040 = 2551069
BaseRepresentation
bin101001110000100000
322200121211
4221300200
520433130
63355504
71311442
oct516040
9280554
10171040
11107561
1282b94
135cb0c
1446492
1535a2a
hex29c20

171040 has 24 divisors (see below), whose sum is σ = 404460. Its totient is φ = 68352.

The previous prime is 171029. The next prime is 171043. The reversal of 171040 is 40171.

It can be written as a sum of positive squares in 2 ways, for example, as 169744 + 1296 = 412^2 + 36^2 .

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 171040.

It is not an unprimeable number, because it can be changed into a prime (171043) 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, 375 + ... + 694.

2171040 is an apocalyptic number.

171040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

171040 is an abundant number, since it is smaller than the sum of its proper divisors (233420).

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

171040 is a wasteful number, since it uses less digits than its factorization.

171040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1084 (or 1076 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 13.

The square root of 171040 is about 413.5698248180. The cubic root of 171040 is about 55.5093185662.

The spelling of 171040 in words is "one hundred seventy-one thousand, forty", and thus it is an iban number.

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 1069 2138 4276 5345 8552 10690 17104 21380 34208 42760 85520 171040