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71871260 = 2253593563
BaseRepresentation
bin1000100100010…
…10101100011100
312000020102211112
410102022230130
5121344340020
611044241152
71531616126
oct422125434
9160212745
1071871260
1137629a3a
12200a01b8
1311b75496
14978c216
15649a2c5
hex448ab1c

71871260 has 12 divisors (see below), whose sum is σ = 150929688. Its totient is φ = 28748496.

The previous prime is 71871259. The next prime is 71871269. The reversal of 71871260 is 6217817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71871269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1796762 + ... + 1796801.

It is an arithmetic number, because the mean of its divisors is an integer number (12577474).

Almost surely, 271871260 is an apocalyptic number.

It is an amenable number.

71871260 is an abundant number, since it is smaller than the sum of its proper divisors (79058428).

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

71871260 is a wasteful number, since it uses less digits than its factorization.

71871260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3593572 (or 3593570 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 32.

The square root of 71871260 is about 8477.6919028707. The cubic root of 71871260 is about 415.7686629827.

The spelling of 71871260 in words is "seventy-one million, eight hundred seventy-one thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 3593563 7187126 14374252 17967815 35935630 71871260