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12806049 = 317251099
BaseRepresentation
bin110000110110…
…011110100001
3220002121121010
4300312132201
511234243144
61134251133
7213564264
oct60663641
926077533
1012806049
117257413
124356aa9
132864b59
1419b4cdb
1511ce5b9
hexc367a1

12806049 has 8 divisors (see below), whose sum is σ = 18079200. Its totient is φ = 8035136.

The previous prime is 12806041. The next prime is 12806077. The reversal of 12806049 is 94060821.

12806049 is digitally balanced in base 2, base 3 and base 4, 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 cyclic number.

It is not a de Polignac number, because 12806049 - 23 = 12806041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12806041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 125499 + ... + 125600.

It is an arithmetic number, because the mean of its divisors is an integer number (2259900).

Almost surely, 212806049 is an apocalyptic number.

It is an amenable number.

12806049 is a deficient number, since it is larger than the sum of its proper divisors (5273151).

12806049 is a wasteful number, since it uses less digits than its factorization.

12806049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251119.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 12806049 is about 3578.5540375967. The cubic root of 12806049 is about 233.9582619691.

The spelling of 12806049 in words is "twelve million, eight hundred six thousand, forty-nine".

Divisors: 1 3 17 51 251099 753297 4268683 12806049