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71768 = 238971
BaseRepresentation
bin10001100001011000
310122110002
4101201120
54244033
61312132
7416144
oct214130
9118402
1071768
1149a14
1235648
1326888
141c224
15163e8
hex11858

71768 has 8 divisors (see below), whose sum is σ = 134580. Its totient is φ = 35880.

The previous prime is 71761. The next prime is 71777. The reversal of 71768 is 86717.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 71768.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71761) by changing a digit.

71768 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4478 + ... + 4493.

271768 is an apocalyptic number.

It is an amenable number.

71768 is a deficient number, since it is larger than the sum of its proper divisors (62812).

71768 is a wasteful number, since it uses less digits than its factorization.

71768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8977 (or 8973 counting only the distinct ones).

The product of its digits is 2352, while the sum is 29.

The square root of 71768 is about 267.8955020152. The cubic root of 71768 is about 41.5569450997.

The spelling of 71768 in words is "seventy-one thousand, seven hundred sixty-eight".

Divisors: 1 2 4 8 8971 17942 35884 71768