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247041 = 3227449
BaseRepresentation
bin111100010100000001
3110112212200
4330110001
530401131
65143413
72046144
oct742401
9415780
10247041
11159673
12bab69
13885a2
146605b
154d2e6
hex3c501

247041 has 6 divisors (see below), whose sum is σ = 356850. Its totient is φ = 164688.

The previous prime is 247031. The next prime is 247067. The reversal of 247041 is 140742.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 230400 + 16641 = 480^2 + 129^2 .

It is not a de Polignac number, because 247041 - 27 = 246913 is a prime.

It is a super-2 number, since 2×2470412 = 122058511362, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (247001) 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 5 ways as a sum of consecutive naturals, for example, 13716 + ... + 13733.

It is an arithmetic number, because the mean of its divisors is an integer number (59475).

2247041 is an apocalyptic number.

It is an amenable number.

247041 is a deficient number, since it is larger than the sum of its proper divisors (109809).

247041 is a wasteful number, since it uses less digits than its factorization.

It is an anagram of its base 8 representation: 247041 = (742401)8.

247041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27455 (or 27452 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 247041 is about 497.0321921164. The cubic root of 247041 is about 62.7465249950.

Adding to 247041 its reverse (140742), we get a palindrome (387783).

The spelling of 247041 in words is "two hundred forty-seven thousand, forty-one", and thus it is an iban number.

Divisors: 1 3 9 27449 82347 247041