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12379031982 = 233320971437
BaseRepresentation
bin10111000011101100…
…10000100110101110
31011221201022222111000
423201312100212232
5200323013010412
65404205341130
7615523015152
oct134166204656
934851288430
1012379031982
115282705a49
1224958677a6
1312238441c5
148560c5062
154c6b914dc
hex2e1d909ae

12379031982 has 32 divisors (see below), whose sum is σ = 27517917600. Its totient is φ = 4125000384.

The previous prime is 12379031971. The next prime is 12379031989. The reversal of 12379031982 is 28913097321.

12379031982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×123790319822 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12379031989) 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 15 ways as a sum of consecutive naturals, for example, 137568 + ... + 209004.

It is an arithmetic number, because the mean of its divisors is an integer number (859934925).

Almost surely, 212379031982 is an apocalyptic number.

12379031982 is an abundant number, since it is smaller than the sum of its proper divisors (15138885618).

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

12379031982 is a wasteful number, since it uses less digits than its factorization.

12379031982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74657 (or 74651 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The spelling of 12379031982 in words is "twelve billion, three hundred seventy-nine million, thirty-one thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 9 18 27 54 3209 6418 9627 19254 28881 57762 71437 86643 142874 173286 214311 428622 642933 1285866 1928799 3857598 229241333 458482666 687723999 1375447998 2063171997 4126343994 6189515991 12379031982