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13319229 = 372118237
BaseRepresentation
bin110010110011…
…110000111101
3221001200112210
4302303300331
511402203404
61153251033
7221132400
oct62636075
927050483
1013319229
117577a30
124563a79
1329b4601
141aa9d37
151281689
hexcb3c3d

13319229 has 24 divisors (see below), whose sum is σ = 22539168. Its totient is φ = 6918240.

The previous prime is 13319227. The next prime is 13319233. The reversal of 13319229 is 92291331.

It is a happy number.

13319229 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13319229 - 21 = 13319227 is a prime.

It is a super-2 number, since 2×133192292 = 354803722308882, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13319196 and 13319205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13319221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2502 + ... + 5735.

It is an arithmetic number, because the mean of its divisors is an integer number (939132).

Almost surely, 213319229 is an apocalyptic number.

It is an amenable number.

13319229 is a deficient number, since it is larger than the sum of its proper divisors (9219939).

13319229 is a wasteful number, since it uses less digits than its factorization.

13319229 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8265 (or 8258 counting only the distinct ones).

The product of its digits is 2916, while the sum is 30.

The square root of 13319229 is about 3649.5518903011. The cubic root of 13319229 is about 237.0425781181.

The spelling of 13319229 in words is "thirteen million, three hundred nineteen thousand, two hundred twenty-nine".

Divisors: 1 3 7 11 21 33 49 77 147 231 539 1617 8237 24711 57659 90607 172977 271821 403613 634249 1210839 1902747 4439743 13319229