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7218285714 = 2321727498581
BaseRepresentation
bin1101011100011111…
…00100110010010010
3200122001110220111100
412232033210302102
5104240340120324
63152132525230
7343606262523
oct65617446222
920561426440
107218285714
113074596992
121495480816
138b05c32a3
144c693c84a
152c3a864c9
hex1ae3e4c92

7218285714 has 48 divisors (see below), whose sum is σ = 16567551000. Its totient is φ = 2263472640.

The previous prime is 7218285691. The next prime is 7218285719. The reversal of 7218285714 is 4175828127.

7218285714 is a `hidden beast` number, since 72 + 1 + 8 + 2 + 8 + 571 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 3169127025 + 4049158689 = 56295^2 + 63633^2 .

7218285714 is a modest number, since divided by 285714 gives 7218 as remainder.

It is a self number, because there is not a number n which added to its sum of digits gives 7218285714.

It is not an unprimeable number, because it can be changed into a prime (7218285719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 836904 + ... + 845484.

Almost surely, 27218285714 is an apocalyptic number.

7218285714 is an abundant number, since it is smaller than the sum of its proper divisors (9349265286).

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

7218285714 is a wasteful number, since it uses less digits than its factorization.

7218285714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11355 (or 11352 counting only the distinct ones).

The product of its digits is 250880, while the sum is 45.

The square root of 7218285714 is about 84960.4950197443. The cubic root of 7218285714 is about 1932.6120782911.

The spelling of 7218285714 in words is "seven billion, two hundred eighteen million, two hundred eighty-five thousand, seven hundred fourteen".

Divisors: 1 2 3 6 9 17 18 34 51 102 153 306 2749 5498 8247 8581 16494 17162 24741 25743 46733 49482 51486 77229 93466 140199 145877 154458 280398 291754 420597 437631 841194 875262 1312893 2625786 23589169 47178338 70767507 141535014 212302521 401015873 424605042 802031746 1203047619 2406095238 3609142857 7218285714