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13729210029 = 321525467781
BaseRepresentation
bin11001100100101001…
…10001111010101101
31022102210221010120100
430302110301322231
5211104134210104
610150200341313
7664136234253
oct146224617255
938383833510
1013729210029
115905865777
1227b1a74839
1313aa49a622
149435485d3
15555494139
hex332531ead

13729210029 has 6 divisors (see below), whose sum is σ = 19831081166. Its totient is φ = 9152806680.

The previous prime is 13729210007. The next prime is 13729210031. The reversal of 13729210029 is 92001292731.

It can be written as a sum of positive squares in only one way, i.e., 13667948100 + 61261929 = 116910^2 + 7827^2 .

It is not a de Polignac number, because 13729210029 - 229 = 13192339117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13729209975 and 13729210002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13729210039) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 762733882 + ... + 762733899.

Almost surely, 213729210029 is an apocalyptic number.

It is an amenable number.

13729210029 is a deficient number, since it is larger than the sum of its proper divisors (6101871137).

13729210029 is a wasteful number, since it uses less digits than its factorization.

13729210029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1525467787 (or 1525467784 counting only the distinct ones).

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

The spelling of 13729210029 in words is "thirteen billion, seven hundred twenty-nine million, two hundred ten thousand, twenty-nine".

Divisors: 1 3 9 1525467781 4576403343 13729210029