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13507429 = 131039033
BaseRepresentation
bin110011100001…
…101101100101
3221102020201011
4303201231211
511424214204
61201302221
7222545155
oct63415545
927366634
1013507429
117696371
124634971
132a4c180
141b18765
1512bc304
hexce1b65

13507429 has 4 divisors (see below), whose sum is σ = 14546476. Its totient is φ = 12468384.

The previous prime is 13507427. The next prime is 13507433. The reversal of 13507429 is 92470531.

13507429 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5299204 + 8208225 = 2302^2 + 2865^2 .

It is a cyclic number.

It is not a de Polignac number, because 13507429 - 21 = 13507427 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13507429.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13507427) 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 3 ways as a sum of consecutive naturals, for example, 519504 + ... + 519529.

It is an arithmetic number, because the mean of its divisors is an integer number (3636619).

Almost surely, 213507429 is an apocalyptic number.

It is an amenable number.

13507429 is a deficient number, since it is larger than the sum of its proper divisors (1039047).

13507429 is a wasteful number, since it uses less digits than its factorization.

13507429 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039046.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 13507429 is about 3675.2454339812. The cubic root of 13507429 is about 238.1538268319.

The spelling of 13507429 in words is "thirteen million, five hundred seven thousand, four hundred twenty-nine".

Divisors: 1 13 1039033 13507429