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13324181 = 133727701
BaseRepresentation
bin110010110100…
…111110010101
3221001221100012
4302310332111
511402333211
61153330005
7221153003
oct62647625
927057305
1013324181
117580722
124566905
1329b6940
141aaba73
151282d8b
hexcb4f95

13324181 has 8 divisors (see below), whose sum is σ = 14737464. Its totient is φ = 11966400.

The previous prime is 13324151. The next prime is 13324189. The reversal of 13324181 is 18142331.

13324181 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 1865956 + 11458225 = 1366^2 + 3385^2 .

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 13324181 - 218 = 13062037 is a prime.

It is a super-2 number, since 2×133241812 = 355067598641522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13324189) 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, 13370 + ... + 14331.

It is an arithmetic number, because the mean of its divisors is an integer number (1842183).

Almost surely, 213324181 is an apocalyptic number.

It is an amenable number.

13324181 is a deficient number, since it is larger than the sum of its proper divisors (1413283).

13324181 is a wasteful number, since it uses less digits than its factorization.

13324181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27751.

The product of its digits is 576, while the sum is 23.

The square root of 13324181 is about 3650.2302667092. The cubic root of 13324181 is about 237.0719514250.

The spelling of 13324181 in words is "thirteen million, three hundred twenty-four thousand, one hundred eighty-one".

Divisors: 1 13 37 481 27701 360113 1024937 13324181