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71210 = 257121
BaseRepresentation
bin10001011000101010
310121200102
4101120222
54234320
61305402
7414416
oct213052
9117612
1071210
1149557
1235262
1326549
141bd46
1516175
hex1162a

71210 has 8 divisors (see below), whose sum is σ = 128196. Its totient is φ = 28480.

The previous prime is 71209. The next prime is 71233. The reversal of 71210 is 1217.

It can be written as a sum of positive squares in 2 ways, for example, as 61009 + 10201 = 247^2 + 101^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 71191 and 71200.

It is an unprimeable 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 in 3 ways as a sum of consecutive naturals, for example, 3551 + ... + 3570.

271210 is an apocalyptic number.

71210 is a deficient number, since it is larger than the sum of its proper divisors (56986).

71210 is a wasteful number, since it uses less digits than its factorization.

71210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7128.

The product of its (nonzero) digits is 14, while the sum is 11.

The square root of 71210 is about 266.8520189169. The cubic root of 71210 is about 41.4489622740.

Adding to 71210 its reverse (1217), we get a palindrome (72427).

The spelling of 71210 in words is "seventy-one thousand, two hundred ten", and thus it is an iban number.

Divisors: 1 2 5 10 7121 14242 35605 71210