Search a number
-
+
13240213 = 73136043
BaseRepresentation
bin110010100000…
…011110010101
3220220200011021
4302200132111
511342141323
61151441141
7220353130
oct62403625
926820137
1013240213
117523628
1245261b1
13298765c
141a89217
15126805d
hexca0795

13240213 has 8 divisors (see below), whose sum is σ = 15182528. Its totient is φ = 11310624.

The previous prime is 13240189. The next prime is 13240217. The reversal of 13240213 is 31204231.

It is a happy number.

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 13240213 - 25 = 13240181 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 (13240217) 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 7 ways as a sum of consecutive naturals, for example, 831 + ... + 5212.

It is an arithmetic number, because the mean of its divisors is an integer number (1897816).

Almost surely, 213240213 is an apocalyptic number.

It is an amenable number.

13240213 is a deficient number, since it is larger than the sum of its proper divisors (1942315).

13240213 is an equidigital number, since it uses as much as digits as its factorization.

13240213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6363.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 13240213 is about 3638.7103484614. The cubic root of 13240213 is about 236.5728983381.

Adding to 13240213 its reverse (31204231), we get a palindrome (44444444).

The spelling of 13240213 in words is "thirteen million, two hundred forty thousand, two hundred thirteen".

Divisors: 1 7 313 2191 6043 42301 1891459 13240213