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13729206 = 232399487
BaseRepresentation
bin110100010111…
…110110110110
3221211111221010
4310113312312
512003313311
61210133050
7224460561
oct64276666
927744833
1013729206
117827a57
124721186
132ac90ba
141b754d8
151312da6
hexd17db6

13729206 has 16 divisors (see below), whose sum is σ = 28652544. Its totient is φ = 4377384.

The previous prime is 13729147. The next prime is 13729207. The reversal of 13729206 is 60292731.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13729207) 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, 49606 + ... + 49881.

It is an arithmetic number, because the mean of its divisors is an integer number (1790784).

Almost surely, 213729206 is an apocalyptic number.

13729206 is an abundant number, since it is smaller than the sum of its proper divisors (14923338).

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

13729206 is a wasteful number, since it uses less digits than its factorization.

13729206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99515.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 13729206 is about 3705.2943202936. The cubic root of 13729206 is about 239.4501649121.

The spelling of 13729206 in words is "thirteen million, seven hundred twenty-nine thousand, two hundred six".

Divisors: 1 2 3 6 23 46 69 138 99487 198974 298461 596922 2288201 4576402 6864603 13729206