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12908163072 = 21237150067
BaseRepresentation
bin11000000010110001…
…01111000000000000
31020022120222121212210
430001120233000000
5202413442204242
65532510422120
7634606401330
oct140130570000
936276877783
1012908163072
115524359a72
122602b01940
1312a935891c
148a64a10c0
15508360d9c
hex30162f000

12908163072 has 104 divisors (see below), whose sum is σ = 39334623616. Its totient is φ = 3688022016.

The previous prime is 12908163041. The next prime is 12908163113. The reversal of 12908163072 is 27036180921.

It is a self number, because there is not a number n which added to its sum of digits gives 12908163072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10983 + ... + 161049.

Almost surely, 212908163072 is an apocalyptic number.

12908163072 is a gapful number since it is divisible by the number (12) 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 12908163072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19667311808).

12908163072 is an abundant number, since it is smaller than the sum of its proper divisors (26426460544).

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

12908163072 is an equidigital number, since it uses as much as digits as its factorization.

12908163072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150101 (or 150079 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 39.

The spelling of 12908163072 in words is "twelve billion, nine hundred eight million, one hundred sixty-three thousand, seventy-two".

Divisors: 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 128 168 192 224 256 336 384 448 512 672 768 896 1024 1344 1536 1792 2048 2688 3072 3584 4096 5376 6144 7168 10752 12288 14336 21504 28672 43008 86016 150067 300134 450201 600268 900402 1050469 1200536 1800804 2100938 2401072 3151407 3601608 4201876 4802144 6302814 7203216 8403752 9604288 12605628 14406432 16807504 19208576 25211256 28812864 33615008 38417152 50422512 57625728 67230016 76834304 100845024 115251456 134460032 153668608 201690048 230502912 268920064 307337216 403380096 461005824 537840128 614674432 806760192 922011648 1075680256 1613520384 1844023296 2151360512 3227040768 4302721024 6454081536 12908163072