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15172 = 223793
BaseRepresentation
bin11101101000100
3202210221
43231010
5441142
6154124
762143
oct35504
922727
1015172
1110443
128944
136ba1
14575a
154767
hex3b44

15172 has 6 divisors (see below), whose sum is σ = 26558. Its totient is φ = 7584.

The previous prime is 15161. The next prime is 15173. The reversal of 15172 is 27151.

15172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 10816 + 4356 = 104^2 + 66^2 .

It is not an unprimeable number, because it can be changed into a prime (15173) by changing a digit.

15172 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1893 + ... + 1900.

215172 is an apocalyptic number.

It is an amenable number.

15172 is a deficient number, since it is larger than the sum of its proper divisors (11386).

15172 is a wasteful number, since it uses less digits than its factorization.

15172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3797 (or 3795 counting only the distinct ones).

The product of its digits is 70, while the sum is 16.

The square root of 15172 is about 123.1746727213. The cubic root of 15172 is about 24.7560268287.

The spelling of 15172 in words is "fifteen thousand, one hundred seventy-two".

Divisors: 1 2 4 3793 7586 15172