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71044060 = 2253552203
BaseRepresentation
bin1000011110000…
…00101111011100
311221200102010111
410033000233130
5121141402220
611014415404
71521602353
oct417005734
9157612114
1071044060
11371144aa
121b961564
1311945b09
14961499a
15638515a
hex43c0bdc

71044060 has 12 divisors (see below), whose sum is σ = 149192568. Its totient is φ = 28417616.

The previous prime is 71044049. The next prime is 71044063. The reversal of 71044060 is 6044017.

It is a super-2 number, since 2×710440602 = 10094516922567200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71044063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1776082 + ... + 1776121.

It is an arithmetic number, because the mean of its divisors is an integer number (12432714).

Almost surely, 271044060 is an apocalyptic number.

It is an amenable number.

71044060 is an abundant number, since it is smaller than the sum of its proper divisors (78148508).

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

71044060 is a wasteful number, since it uses less digits than its factorization.

71044060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3552212 (or 3552210 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 71044060 is about 8428.7638476825. The cubic root of 71044060 is about 414.1674118923.

Adding to 71044060 its reverse (6044017), we get a palindrome (77088077).

The spelling of 71044060 in words is "seventy-one million, forty-four thousand, sixty".

Divisors: 1 2 4 5 10 20 3552203 7104406 14208812 17761015 35522030 71044060