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13288243 = 311932221
BaseRepresentation
bin110010101100…
…001100110011
3221000010001011
4302230030303
511400210433
61152451351
7220643143
oct62541463
927003034
1013288243
117556721
124549b57
1329a3487
141a9c923
1512773cd
hexcac333

13288243 has 8 divisors (see below), whose sum is σ = 13794176. Its totient is φ = 12787200.

The previous prime is 13288211. The next prime is 13288259. The reversal of 13288243 is 34288231.

13288243 is digitally balanced in base 2, 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 13288243 - 25 = 13288211 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13288343) 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, 4873 + ... + 7093.

It is an arithmetic number, because the mean of its divisors is an integer number (1724272).

Almost surely, 213288243 is an apocalyptic number.

13288243 is a deficient number, since it is larger than the sum of its proper divisors (505933).

13288243 is a wasteful number, since it uses less digits than its factorization.

13288243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2445.

The product of its digits is 9216, while the sum is 31.

The square root of 13288243 is about 3645.3042397035. The cubic root of 13288243 is about 236.8586159051.

It can be divided in two parts, 13288 and 243, that added together give a palindrome (13531).

The spelling of 13288243 in words is "thirteen million, two hundred eighty-eight thousand, two hundred forty-three".

Divisors: 1 31 193 2221 5983 68851 428653 13288243