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12730026307 = 19289659963
BaseRepresentation
bin10111101101100010…
…01100100101000011
31012212011210100011211
423312301030211003
5202032341320212
65503104350551
7630314303215
oct136661144503
935764710154
1012730026307
11544284a1a9
122573315457
13127b487b5b
1488a9705b5
154e78c49a7
hex2f6c4c943

12730026307 has 4 divisors (see below), whose sum is σ = 12730705560. Its totient is φ = 12729347056.

The previous prime is 12730026301. The next prime is 12730026311. The reversal of 12730026307 is 70362003721.

12730026307 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70362003721 = 401317533517.

It is a cyclic number.

It is not a de Polignac number, because 12730026307 - 23 = 12730026299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12730026301) 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 3 ways as a sum of consecutive naturals, for example, 310693 + ... + 349270.

It is an arithmetic number, because the mean of its divisors is an integer number (3182676390).

Almost surely, 212730026307 is an apocalyptic number.

12730026307 is a deficient number, since it is larger than the sum of its proper divisors (679253).

12730026307 is an equidigital number, since it uses as much as digits as its factorization.

12730026307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679252.

The product of its (nonzero) digits is 10584, while the sum is 31.

The spelling of 12730026307 in words is "twelve billion, seven hundred thirty million, twenty-six thousand, three hundred seven".

Divisors: 1 19289 659963 12730026307