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12489683786 = 28867704279
BaseRepresentation
bin10111010000111000…
…10111001101001010
31012020102112200012222
423220130113031022
5201034324340121
65423201134042
7621335363156
oct135034271512
935212480188
1012489683786
11532a112318
12250692a322
131240747148
14866a8a066
154d174c0ab
hex2e871734a

12489683786 has 8 divisors (see below), whose sum is σ = 18736665120. Its totient is φ = 6244128748.

The previous prime is 12489683761. The next prime is 12489683821. The reversal of 12489683786 is 68738698421.

12489683786 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×124896837863 (a number of 31 digits) contains 333 as substring.

It is an unprimeable number.

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, 334406 + ... + 369873.

It is an arithmetic number, because the mean of its divisors is an integer number (2342083140).

Almost surely, 212489683786 is an apocalyptic number.

12489683786 is a deficient number, since it is larger than the sum of its proper divisors (6246981334).

12489683786 is an equidigital number, since it uses as much as digits as its factorization.

12489683786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713148.

The product of its digits is 27869184, while the sum is 62.

The spelling of 12489683786 in words is "twelve billion, four hundred eighty-nine million, six hundred eighty-three thousand, seven hundred eighty-six".

Divisors: 1 2 8867 17734 704279 1408558 6244841893 12489683786