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12269069 = 24150909
BaseRepresentation
bin101110110011…
…011000001101
3212002022222222
4232303120031
511120102234
61114545125
7206166611
oct56633015
925068888
1012269069
116a1aa2a
1241381a5
132707607
1418b5341
15112542e
hexbb360d

12269069 has 4 divisors (see below), whose sum is σ = 12320220. Its totient is φ = 12217920.

The previous prime is 12269063. The next prime is 12269071. The reversal of 12269069 is 96096221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96096221 = 137392017.

It can be written as a sum of positive squares in 2 ways, for example, as 6325225 + 5943844 = 2515^2 + 2438^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12269069 is a prime.

It is a super-2 number, since 2×122690692 = 301060108253522, 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 (12269063) 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, 25214 + ... + 25695.

It is an arithmetic number, because the mean of its divisors is an integer number (3080055).

Almost surely, 212269069 is an apocalyptic number.

It is an amenable number.

12269069 is a deficient number, since it is larger than the sum of its proper divisors (51151).

12269069 is an equidigital number, since it uses as much as digits as its factorization.

12269069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51150.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 12269069 is about 3502.7230835451. The cubic root of 12269069 is about 230.6413667534.

The spelling of 12269069 in words is "twelve million, two hundred sixty-nine thousand, sixty-nine".

Divisors: 1 241 50909 12269069