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71345 = 519751
BaseRepresentation
bin10001011010110001
310121212102
4101122301
54240340
61310145
7415001
oct213261
9117772
1071345
114966a
1235355
1326621
141c001
1516215
hex116b1

71345 has 8 divisors (see below), whose sum is σ = 90240. Its totient is φ = 54000.

The previous prime is 71341. The next prime is 71347. The reversal of 71345 is 54317.

It is a happy number.

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

It is not a de Polignac number, because 71345 - 22 = 71341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (71341) 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, 281 + ... + 470.

It is an arithmetic number, because the mean of its divisors is an integer number (11280).

271345 is an apocalyptic number.

It is an amenable number.

71345 is a deficient number, since it is larger than the sum of its proper divisors (18895).

71345 is a wasteful number, since it uses less digits than its factorization.

71345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775.

The product of its digits is 420, while the sum is 20.

The square root of 71345 is about 267.1048483274. The cubic root of 71345 is about 41.4751387360.

The spelling of 71345 in words is "seventy-one thousand, three hundred forty-five".

Divisors: 1 5 19 95 751 3755 14269 71345