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12708003840 = 2143578389
BaseRepresentation
bin10111101010111010…
…01100000000000000
31012210122100111000220
423311131030000000
5202011222110330
65501000343040
7626626151610
oct136535140000
935718314026
1012708003840
115431378414
122567a74a80
131276a46ccc
14887a7aa40
154e59c4710
hex2f574c000

12708003840 has 480 divisors, whose sum is σ = 47561955840. Its totient is φ = 2837446656.

The previous prime is 12708003809. The next prime is 12708003851. The reversal of 12708003840 is 4830080721.

It is a tau number, because it is divible by the number of its divisors (480).

It is a super-2 number, since 2×127080038402 (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142786516 + ... + 142786604.

It is an arithmetic number, because the mean of its divisors is an integer number (99087408).

Almost surely, 212708003840 is an apocalyptic number.

12708003840 is a gapful number since it is divisible by the number (10) 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 12708003840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23780977920).

12708003840 is an abundant number, since it is smaller than the sum of its proper divisors (34853952000).

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

12708003840 is an frugal number, since it uses more digits than its factorization.

12708003840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 189 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The spelling of 12708003840 in words is "twelve billion, seven hundred eight million, three thousand, eight hundred forty".