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71230 = 2517419
BaseRepresentation
bin10001011000111110
310121201011
4101120332
54234410
61305434
7414445
oct213076
9117634
1071230
1149575
123527a
1326563
141bd5c
151618a
hex1163e

71230 has 16 divisors (see below), whose sum is σ = 136080. Its totient is φ = 26752.

The previous prime is 71209. The next prime is 71233. The reversal of 71230 is 3217.

It is a self number, because there is not a number n which added to its sum of digits gives 71230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71233) 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, 40 + ... + 379.

It is an arithmetic number, because the mean of its divisors is an integer number (8505).

271230 is an apocalyptic number.

71230 is a deficient number, since it is larger than the sum of its proper divisors (64850).

71230 is a wasteful number, since it uses less digits than its factorization.

71230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443.

The product of its (nonzero) digits is 42, while the sum is 13.

The square root of 71230 is about 266.8894902389. The cubic root of 71230 is about 41.4528423547.

Subtracting from 71230 its sum of digits (13), we obtain a palindrome (71217).

Adding to 71230 its reverse (3217), we get a palindrome (74447).

The spelling of 71230 in words is "seventy-one thousand, two hundred thirty".

Divisors: 1 2 5 10 17 34 85 170 419 838 2095 4190 7123 14246 35615 71230