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71385260 = 2253569263
BaseRepresentation
bin1000100000101…
…00000010101100
311222022202011112
410100110002230
5121233312020
611030011152
71524523202
oct420240254
9158282145
1071385260
1137327891
121baa6ab8
1311a351cb
1496a3072
1564012c5
hex44140ac

71385260 has 12 divisors (see below), whose sum is σ = 149909088. Its totient is φ = 28554096.

The previous prime is 71385253. The next prime is 71385263. The reversal of 71385260 is 6258317.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (71385263) 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, 1784612 + ... + 1784651.

It is an arithmetic number, because the mean of its divisors is an integer number (12492424).

Almost surely, 271385260 is an apocalyptic number.

It is an amenable number.

71385260 is an abundant number, since it is smaller than the sum of its proper divisors (78523828).

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

71385260 is a wasteful number, since it uses less digits than its factorization.

71385260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3569272 (or 3569270 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 71385260 is about 8448.9798200730. The cubic root of 71385260 is about 414.8293874577.

The spelling of 71385260 in words is "seventy-one million, three hundred eighty-five thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 3569263 7138526 14277052 17846315 35692630 71385260