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13146269 = 64120509
BaseRepresentation
bin110010001001…
…100010011101
3220201220021212
4302021202131
511331140034
61145434205
7216512213
oct62114235
926656255
1013146269
117469a94
12449b965
132953976
141a62cb3
15124a2ce
hexc8989d

13146269 has 4 divisors (see below), whose sum is σ = 13167420. Its totient is φ = 13125120.

The previous prime is 13146257. The next prime is 13146277. The reversal of 13146269 is 96264131.

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 7562500 + 5583769 = 2750^2 + 2363^2 .

It is a cyclic number.

It is not a de Polignac number, because 13146269 - 216 = 13080733 is a prime.

It is a super-2 number, since 2×131462692 = 345648777240722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13146209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9614 + ... + 10895.

It is an arithmetic number, because the mean of its divisors is an integer number (3291855).

Almost surely, 213146269 is an apocalyptic number.

It is an amenable number.

13146269 is a deficient number, since it is larger than the sum of its proper divisors (21151).

13146269 is an equidigital number, since it uses as much as digits as its factorization.

13146269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21150.

The product of its digits is 7776, while the sum is 32.

The square root of 13146269 is about 3625.7783991855. The cubic root of 13146269 is about 236.0120469288.

The spelling of 13146269 in words is "thirteen million, one hundred forty-six thousand, two hundred sixty-nine".

Divisors: 1 641 20509 13146269