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12728663 is a prime number
BaseRepresentation
bin110000100011…
…100101010111
3212221200102222
4300203211113
511224304123
61132452555
7213122543
oct60434527
925850388
1012728663
117204262
12431a15b
13283886c
141994a23
1511b66c8
hexc23957

12728663 has 2 divisors, whose sum is σ = 12728664. Its totient is φ = 12728662.

The previous prime is 12728657. The next prime is 12728707. The reversal of 12728663 is 36682721.

It is a happy number.

12728663 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12728663 - 212 = 12724567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12728063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6364331 + 6364332.

It is an arithmetic number, because the mean of its divisors is an integer number (6364332).

Almost surely, 212728663 is an apocalyptic number.

12728663 is a deficient number, since it is larger than the sum of its proper divisors (1).

12728663 is an equidigital number, since it uses as much as digits as its factorization.

12728663 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 12728663 is about 3567.7251856050. The cubic root of 12728663 is about 233.4860453827.

The spelling of 12728663 in words is "twelve million, seven hundred twenty-eight thousand, six hundred sixty-three".