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9868930281 = 3271014393533
BaseRepresentation
bin10010011000011101…
…11110110011101001
3221110210010121021100
421030032332303221
5130202421232111
64311141232013
7466363344330
oct111416766351
927423117240
109868930281
114204832431
121ab5102609
13c137b8b22
146989a4d17
153cb61c756
hex24c3bece9

9868930281 has 48 divisors (see below), whose sum is σ = 16495015680. Its totient is φ = 5569257600.

The previous prime is 9868930241. The next prime is 9868930319. The reversal of 9868930281 is 1820398689.

It is a happy number.

It is not a de Polignac number, because 9868930281 - 26 = 9868930217 is a prime.

It is a super-2 number, since 2×98689302812 (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (9868930241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2791591 + ... + 2795123.

It is an arithmetic number, because the mean of its divisors is an integer number (343646160).

Almost surely, 29868930281 is an apocalyptic number.

It is an amenable number.

9868930281 is a deficient number, since it is larger than the sum of its proper divisors (6626085399).

9868930281 is a wasteful number, since it uses less digits than its factorization.

9868930281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4086 (or 4083 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 9868930281 is about 99342.4898067287. The cubic root of 9868930281 is about 2144.9805589383.

The spelling of 9868930281 in words is "nine billion, eight hundred sixty-eight million, nine hundred thirty thousand, two hundred eighty-one".

Divisors: 1 3 7 9 21 63 101 303 439 707 909 1317 2121 3073 3533 3951 6363 9219 10599 24731 27657 31797 44339 74193 133017 222579 310373 356833 399051 931119 1070499 1550987 2497831 2793357 3211497 4652961 7493493 10856909 13958883 22480479 32570727 97712181 156649687 469949061 1096547809 1409847183 3289643427 9868930281