Search a number
-
+
12886199 = 19678221
BaseRepresentation
bin110001001010…
…000010110111
3220020200112122
4301022002313
511244324244
61140110155
7214350044
oct61120267
926220478
1012886199
117301657
12439535b
132892491
1419d61cb
1511e81ee
hexc4a0b7

12886199 has 4 divisors (see below), whose sum is σ = 13564440. Its totient is φ = 12207960.

The previous prime is 12886183. The next prime is 12886213. The reversal of 12886199 is 99168821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99168821 = 731358477.

It is a cyclic number.

It is not a de Polignac number, because 12886199 - 24 = 12886183 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 (12886129) 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, 339092 + ... + 339129.

It is an arithmetic number, because the mean of its divisors is an integer number (3391110).

Almost surely, 212886199 is an apocalyptic number.

12886199 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12886199 is a deficient number, since it is larger than the sum of its proper divisors (678241).

12886199 is an equidigital number, since it uses as much as digits as its factorization.

12886199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678240.

The product of its digits is 62208, while the sum is 44.

The square root of 12886199 is about 3589.7352270049. The cubic root of 12886199 is about 234.4453434841.

The spelling of 12886199 in words is "twelve million, eight hundred eighty-six thousand, one hundred ninety-nine".

Divisors: 1 19 678221 12886199