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13438017 = 325925307
BaseRepresentation
bin110011010000…
…110001000001
3221021201111100
4303100301001
511420004032
61200005013
7222135615
oct63206101
927251440
1013438017
1176491aa
124600769
132a266b8
141adb345
1512a697c
hexcd0c41

13438017 has 12 divisors (see below), whose sum is σ = 19740240. Its totient is φ = 8806488.

The previous prime is 13438013. The next prime is 13438031. The reversal of 13438017 is 71083431.

It is not a de Polignac number, because 13438017 - 22 = 13438013 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13438013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12123 + ... + 13184.

It is an arithmetic number, because the mean of its divisors is an integer number (1645020).

Almost surely, 213438017 is an apocalyptic number.

It is an amenable number.

13438017 is a deficient number, since it is larger than the sum of its proper divisors (6302223).

13438017 is a wasteful number, since it uses less digits than its factorization.

13438017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25372 (or 25369 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 13438017 is about 3665.7900921902. The cubic root of 13438017 is about 237.7451842842.

The spelling of 13438017 in words is "thirteen million, four hundred thirty-eight thousand, seventeen".

Divisors: 1 3 9 59 177 531 25307 75921 227763 1493113 4479339 13438017