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12387265 = 511225223
BaseRepresentation
bin101111010000…
…001111000001
3212022100010121
4233100033001
511132343030
61121300241
7210201322
oct57201701
925270117
1012387265
116aa0810
124194681
132749357
141906449
15114a47a
hexbd03c1

12387265 has 8 divisors (see below), whose sum is σ = 16216128. Its totient is φ = 9008880.

The previous prime is 12387251. The next prime is 12387269. The reversal of 12387265 is 56278321.

It is a happy number.

12387265 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12387265 - 25 = 12387233 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 12387265.

It is not an unprimeable number, because it can be changed into a prime (12387269) 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 7 ways as a sum of consecutive naturals, for example, 112557 + ... + 112666.

It is an arithmetic number, because the mean of its divisors is an integer number (2027016).

Almost surely, 212387265 is an apocalyptic number.

It is an amenable number.

12387265 is a deficient number, since it is larger than the sum of its proper divisors (3828863).

12387265 is a wasteful number, since it uses less digits than its factorization.

12387265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225239.

The product of its digits is 20160, while the sum is 34.

The square root of 12387265 is about 3519.5546593284. The cubic root of 12387265 is about 231.3796409681.

The spelling of 12387265 in words is "twelve million, three hundred eighty-seven thousand, two hundred sixty-five".

Divisors: 1 5 11 55 225223 1126115 2477453 12387265