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13194729 = 324193499
BaseRepresentation
bin110010010101…
…010111101001
3220211100202200
4302111113221
511334212404
61150450413
7220103412
oct62252751
926740680
1013194729
1174a2439
124503a09
13296ca42
141a76809
151259839
hexc955e9

13194729 has 12 divisors (see below), whose sum is σ = 19110000. Its totient is φ = 8772984.

The previous prime is 13194707. The next prime is 13194757. The reversal of 13194729 is 92749131.

It is not a de Polignac number, because 13194729 - 25 = 13194697 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13194693 and 13194702.

It is not an unprimeable number, because it can be changed into a prime (13194799) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2022 + ... + 5520.

It is an arithmetic number, because the mean of its divisors is an integer number (1592500).

Almost surely, 213194729 is an apocalyptic number.

It is an amenable number.

13194729 is a deficient number, since it is larger than the sum of its proper divisors (5915271).

13194729 is a wasteful number, since it uses less digits than its factorization.

13194729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3924 (or 3921 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 13194729 is about 3632.4549549857. The cubic root of 13194729 is about 236.3016885308.

The spelling of 13194729 in words is "thirteen million, one hundred ninety-four thousand, seven hundred twenty-nine".

Divisors: 1 3 9 419 1257 3499 3771 10497 31491 1466081 4398243 13194729