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71248 = 246173
BaseRepresentation
bin10001011001010000
310121201211
4101121100
54234443
61305504
7414502
oct213120
9117654
1071248
1149591
1235294
1326578
141bd72
151619d
hex11650

71248 has 20 divisors (see below), whose sum is σ = 142228. Its totient is φ = 34560.

The previous prime is 71237. The next prime is 71249. The reversal of 71248 is 84217.

It can be written as a sum of positive squares in 2 ways, for example, as 17424 + 53824 = 132^2 + 232^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 940 + ... + 1012.

271248 is an apocalyptic number.

It is an amenable number.

71248 is a deficient number, since it is larger than the sum of its proper divisors (70980).

71248 is a wasteful number, since it uses less digits than its factorization.

71248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142 (or 136 counting only the distinct ones).

The product of its digits is 448, while the sum is 22.

The square root of 71248 is about 266.9232099312. The cubic root of 71248 is about 41.4563338065.

The spelling of 71248 in words is "seventy-one thousand, two hundred forty-eight".

Divisors: 1 2 4 8 16 61 73 122 146 244 292 488 584 976 1168 4453 8906 17812 35624 71248