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71012929 = 1311348341
BaseRepresentation
bin1000011101110…
…01001001000001
311221121211102111
410032321021001
5121134403204
611014015321
71521412531
oct416711101
9157554374
1071012929
11370a3079
121b947541
13119348b0
1496074c1
15637ad04
hex43b9241

71012929 has 8 divisors (see below), whose sum is σ = 77153832. Its totient is φ = 64968960.

The previous prime is 71012923. The next prime is 71012989. The reversal of 71012929 is 92921017.

It can be written as a sum of positive squares in 4 ways, for example, as 200704 + 70812225 = 448^2 + 8415^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 71012929 - 27 = 71012801 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 71012929.

It is not an unprimeable number, because it can be changed into a prime (71012923) 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 7 ways as a sum of consecutive naturals, for example, 22702 + ... + 25639.

It is an arithmetic number, because the mean of its divisors is an integer number (9644229).

Almost surely, 271012929 is an apocalyptic number.

It is an amenable number.

71012929 is a deficient number, since it is larger than the sum of its proper divisors (6140903).

71012929 is a wasteful number, since it uses less digits than its factorization.

71012929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48467.

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 71012929 is about 8426.9169332562. The cubic root of 71012929 is about 414.1069079861.

The spelling of 71012929 in words is "seventy-one million, twelve thousand, nine hundred twenty-nine".

Divisors: 1 13 113 1469 48341 628433 5462533 71012929