Search a number
-
+
12880327 = 46727581
BaseRepresentation
bin110001001000…
…100111000111
3220020101111011
4301020213013
511244132302
61140023051
7214323655
oct61104707
926211434
1012880327
1172a81a9
124391a87
13288c8c5
1419d3dd5
1511e65d7
hexc489c7

12880327 has 4 divisors (see below), whose sum is σ = 12908376. Its totient is φ = 12852280.

The previous prime is 12880319. The next prime is 12880331. The reversal of 12880327 is 72308821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72308821 = 135562217.

It is a cyclic number.

It is not a de Polignac number, because 12880327 - 23 = 12880319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12880337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13324 + ... + 14257.

It is an arithmetic number, because the mean of its divisors is an integer number (3227094).

Almost surely, 212880327 is an apocalyptic number.

12880327 is a deficient number, since it is larger than the sum of its proper divisors (28049).

12880327 is an equidigital number, since it uses as much as digits as its factorization.

12880327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28048.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 12880327 is about 3588.9172461900. The cubic root of 12880327 is about 234.4097272868.

The spelling of 12880327 in words is "twelve million, eight hundred eighty thousand, three hundred twenty-seven".

Divisors: 1 467 27581 12880327