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17138238 = 2313219721
BaseRepresentation
bin100000101100…
…0001000111110
31012020201020120
41001120020332
513341410423
61411155410
7265446465
oct101301076
935221216
1017138238
119746237
1258a5b66
133720990
1423c19dc
151787ee3
hex105823e

17138238 has 16 divisors (see below), whose sum is σ = 36913296. Its totient is φ = 5273280.

The previous prime is 17138237. The next prime is 17138263. The reversal of 17138238 is 83283171.

It is a junction number, because it is equal to n+sod(n) for n = 17138199 and 17138208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17138237) 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, 109783 + ... + 109938.

It is an arithmetic number, because the mean of its divisors is an integer number (2307081).

Almost surely, 217138238 is an apocalyptic number.

17138238 is an abundant number, since it is smaller than the sum of its proper divisors (19775058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

17138238 is a wasteful number, since it uses less digits than its factorization.

17138238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 219739.

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

The square root of 17138238 is about 4139.8355039784. The cubic root of 17138238 is about 257.8232368935.

The spelling of 17138238 in words is "seventeen million, one hundred thirty-eight thousand, two hundred thirty-eight".

Divisors: 1 2 3 6 13 26 39 78 219721 439442 659163 1318326 2856373 5712746 8569119 17138238