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275172 = 22323997
BaseRepresentation
bin1000011001011100100
3111222110120
41003023210
532301142
65521540
72224152
oct1031344
9458416
10275172
11178817
121132b0
1398331
14723d2
15567ec
hex432e4

275172 has 24 divisors (see below), whose sum is σ = 670656. Its totient is φ = 87648.

The previous prime is 275167. The next prime is 275183. The reversal of 275172 is 271572.

It is a nialpdrome in base 13.

It is an unprimeable number.

275172 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223 + ... + 774.

It is an arithmetic number, because the mean of its divisors is an integer number (27944).

2275172 is an apocalyptic number.

It is an amenable number.

275172 is an abundant number, since it is smaller than the sum of its proper divisors (395484).

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

275172 is a wasteful number, since it uses less digits than its factorization.

275172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027 (or 1025 counting only the distinct ones).

The product of its digits is 980, while the sum is 24.

The square root of 275172 is about 524.5683940155. The cubic root of 275172 is about 65.0431271975.

Subtracting from 275172 its reverse (271572), we obtain a square (3600 = 602).

The spelling of 275172 in words is "two hundred seventy-five thousand, one hundred seventy-two".

Divisors: 1 2 3 4 6 12 23 46 69 92 138 276 997 1994 2991 3988 5982 11964 22931 45862 68793 91724 137586 275172