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12682910438 = 2111997421743
BaseRepresentation
bin10111100111111010…
…11101101011100110
31012201220010121100122
423303331131223212
5201433311113223
65454302441542
7626202650162
oct136375355346
935656117318
1012682910438
115419199370
12255b5932b2
13127179c443
148845c7ca2
154e36b95c8
hex2f3f5dae6

12682910438 has 64 divisors (see below), whose sum is σ = 22153582080. Its totient is φ = 5385139200.

The previous prime is 12682910437. The next prime is 12682910477. The reversal of 12682910438 is 83401928621.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12682910437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17069495 + ... + 17070237.

It is an arithmetic number, because the mean of its divisors is an integer number (346149720).

Almost surely, 212682910438 is an apocalyptic number.

12682910438 is a deficient number, since it is larger than the sum of its proper divisors (9470671642).

12682910438 is a wasteful number, since it uses less digits than its factorization.

12682910438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1293.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 12682910438 in words is "twelve billion, six hundred eighty-two million, nine hundred ten thousand, four hundred thirty-eight".

Divisors: 1 2 11 19 22 38 97 194 209 418 421 743 842 1067 1486 1843 2134 3686 4631 7999 8173 9262 14117 15998 16346 20273 28234 40546 40837 72071 81674 87989 144142 155287 175978 310574 312803 449207 625606 775903 792781 898414 1369349 1551806 1585562 2738698 3440833 5943257 6881666 8534933 11886514 15062839 17069866 30125678 30341891 60683782 65375827 130751654 333760801 576495929 667521602 1152991858 6341455219 12682910438