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13669029 = 3211138071
BaseRepresentation
bin110100001001…
…001010100101
3221201110101100
4310021022211
511444402104
61204550313
7224120253
oct64111245
927643340
1013669029
117796820
1246b2399
132aa78aa
141b5b5d3
151300139
hexd092a5

13669029 has 12 divisors (see below), whose sum is σ = 21539232. Its totient is φ = 8284200.

The previous prime is 13669013. The next prime is 13669039. The reversal of 13669029 is 92096631.

It is not a de Polignac number, because 13669029 - 24 = 13669013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13668984 and 13669002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13669009) 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, 68937 + ... + 69134.

It is an arithmetic number, because the mean of its divisors is an integer number (1794936).

Almost surely, 213669029 is an apocalyptic number.

It is an amenable number.

13669029 is a deficient number, since it is larger than the sum of its proper divisors (7870203).

13669029 is a wasteful number, since it uses less digits than its factorization.

13669029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138088 (or 138085 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 13669029 is about 3697.1649949657. The cubic root of 13669029 is about 239.0998048410.

The spelling of 13669029 in words is "thirteen million, six hundred sixty-nine thousand, twenty-nine".

Divisors: 1 3 9 11 33 99 138071 414213 1242639 1518781 4556343 13669029