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12458128608 = 2532731015867
BaseRepresentation
bin10111001101000111…
…11111010011100000
31012011020011111122200
423212203333103200
5201003240103413
65420112533200
7620503226442
oct134643772340
935136144580
1012458128608
11531331a462
1224b8251200
131237049343
148627d4492
154cdab7573
hex2e68ff4e0

12458128608 has 144 divisors (see below), whose sum is σ = 36274872816. Its totient is φ = 4054579200.

The previous prime is 12458128591. The next prime is 12458128619. The reversal of 12458128608 is 80682185421.

12458128608 is a `hidden beast` number, since 1 + 2 + 4 + 581 + 2 + 8 + 60 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2120491 + ... + 2126357.

It is an arithmetic number, because the mean of its divisors is an integer number (251908839).

Almost surely, 212458128608 is an apocalyptic number.

12458128608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12458128608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18137436408).

12458128608 is an abundant number, since it is smaller than the sum of its proper divisors (23816744208).

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

12458128608 is a wasteful number, since it uses less digits than its factorization.

12458128608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6057 (or 6046 counting only the distinct ones).

The product of its (nonzero) digits is 245760, while the sum is 45.

The spelling of 12458128608 in words is "twelve billion, four hundred fifty-eight million, one hundred twenty-eight thousand, six hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 73 96 101 144 146 202 219 288 292 303 404 438 584 606 657 808 876 909 1168 1212 1314 1616 1752 1818 2336 2424 2628 3232 3504 3636 4848 5256 5867 7008 7272 7373 9696 10512 11734 14544 14746 17601 21024 22119 23468 29088 29492 35202 44238 46936 52803 58984 66357 70404 88476 93872 105606 117968 132714 140808 176952 187744 211212 235936 265428 281616 353904 422424 428291 530856 563232 592567 707808 844848 856582 1061712 1185134 1284873 1689696 1713164 1777701 2123424 2370268 2569746 3426328 3555402 3854619 4740536 5139492 5333103 6852656 7110804 7709238 9481072 10278984 10666206 13705312 14221608 15418476 18962144 20557968 21332412 28443216 30836952 41115936 42664824 43257391 56886432 61673904 85329648 86514782 123347808 129772173 170659296 173029564 259544346 346059128 389316519 519088692 692118256 778633038 1038177384 1384236512 1557266076 2076354768 3114532152 4152709536 6229064304 12458128608