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12868026576 = 243436234509
BaseRepresentation
bin10111111101111111…
…01000000011010000
31020012210110110221220
423332333220003100
5202323203322301
65524514245040
7633611264316
oct137677500320
936183413856
1012868026576
115503735909
1225b1586780
1312a0c44c12
148a10140b6
15504a83936
hex2fefe80d0

12868026576 has 40 divisors (see below), whose sum is σ = 34015486560. Its totient is φ = 4189589376.

The previous prime is 12868026571. The next prime is 12868026599. The reversal of 12868026576 is 67562086821.

It is a happy number.

It is a super-2 number, since 2×128680265762 (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 (12868026571) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3115191 + ... + 3119318.

It is an arithmetic number, because the mean of its divisors is an integer number (850387164).

Almost surely, 212868026576 is an apocalyptic number.

12868026576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12868026576 is an abundant number, since it is smaller than the sum of its proper divisors (21147459984).

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

12868026576 is a wasteful number, since it uses less digits than its factorization.

12868026576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6234563 (or 6234557 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 51.

The spelling of 12868026576 in words is "twelve billion, eight hundred sixty-eight million, twenty-six thousand, five hundred seventy-six".

Divisors: 1 2 3 4 6 8 12 16 24 43 48 86 129 172 258 344 516 688 1032 2064 6234509 12469018 18703527 24938036 37407054 49876072 74814108 99752144 149628216 268083887 299256432 536167774 804251661 1072335548 1608503322 2144671096 3217006644 4289342192 6434013288 12868026576