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71436 = 2235953
BaseRepresentation
bin10001011100001100
310121222210
4101130030
54241221
61310420
7415161
oct213414
9117883
1071436
1149742
1235410
1326691
141c068
1516276
hex1170c

71436 has 12 divisors (see below), whose sum is σ = 166712. Its totient is φ = 23808.

The previous prime is 71429. The next prime is 71437. The reversal of 71436 is 63417.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (71437) by changing a digit.

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, 2965 + ... + 2988.

271436 is an apocalyptic number.

It is an amenable number.

71436 is an abundant number, since it is smaller than the sum of its proper divisors (95276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (83356).

71436 is a wasteful number, since it uses less digits than its factorization.

71436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5960 (or 5958 counting only the distinct ones).

The product of its digits is 504, while the sum is 21.

The square root of 71436 is about 267.2751391357. The cubic root of 71436 is about 41.4927649844.

The spelling of 71436 in words is "seventy-one thousand, four hundred thirty-six".

Divisors: 1 2 3 4 6 12 5953 11906 17859 23812 35718 71436