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13838217 = 343107273
BaseRepresentation
bin110100110010…
…011110001001
3222001001110120
4310302132021
512020310332
61212333453
7225423441
oct64623611
928031416
1013838217
1178a1948
124774289
132b368c3
141ba3121
15133532c
hexd32789

13838217 has 8 divisors (see below), whose sum is σ = 18880224. Its totient is φ = 9010848.

The previous prime is 13838207. The next prime is 13838243. The reversal of 13838217 is 71283831.

13838217 is digitally balanced in base 2 and base 4, because in such bases 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 not a de Polignac number, because 13838217 - 28 = 13837961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13838207) 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, 53508 + ... + 53765.

It is an arithmetic number, because the mean of its divisors is an integer number (2360028).

Almost surely, 213838217 is an apocalyptic number.

It is an amenable number.

13838217 is a deficient number, since it is larger than the sum of its proper divisors (5042007).

13838217 is a wasteful number, since it uses less digits than its factorization.

13838217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107319.

The product of its digits is 8064, while the sum is 33.

The square root of 13838217 is about 3719.9754031445. The cubic root of 13838217 is about 240.0822461172.

The spelling of 13838217 in words is "thirteen million, eight hundred thirty-eight thousand, two hundred seventeen".

Divisors: 1 3 43 129 107273 321819 4612739 13838217