Search a number
-
+
12823013 = 72836473
BaseRepresentation
bin110000111010…
…100111100101
3220010110212102
4300322213211
511240314023
61134501445
7213664610
oct60724745
926113772
1012823013
117269135
124364885
13286c7a8
1419bb177
1511d4628
hexc3a9e5

12823013 has 8 divisors (see below), whose sum is σ = 14708928. Its totient is φ = 10950624.

The previous prime is 12823009. The next prime is 12823021. The reversal of 12823013 is 31032821.

12823013 is digitally balanced in base 3, because in such base 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 12823013 - 22 = 12823009 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 (12823033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1256 + ... + 5217.

It is an arithmetic number, because the mean of its divisors is an integer number (1838616).

Almost surely, 212823013 is an apocalyptic number.

It is an amenable number.

12823013 is a deficient number, since it is larger than the sum of its proper divisors (1885915).

12823013 is an equidigital number, since it uses as much as digits as its factorization.

12823013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6763.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 12823013 is about 3580.9234842426. The cubic root of 12823013 is about 234.0615235018.

Adding to 12823013 its reverse (31032821), we get a palindrome (43855834).

The spelling of 12823013 in words is "twelve million, eight hundred twenty-three thousand, thirteen".

Divisors: 1 7 283 1981 6473 45311 1831859 12823013