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12385285 = 511673361
BaseRepresentation
bin101111001111…
…110000000101
3212022020102021
4233033300011
511132312120
61121243141
7210162463
oct57176005
925266367
1012385285
116a9a280
1241934b1
132748493
141905833
151149aaa
hexbcfc05

12385285 has 16 divisors (see below), whose sum is σ = 16460352. Its totient is φ = 8870400.

The previous prime is 12385279. The next prime is 12385297. The reversal of 12385285 is 58258321.

It is not a de Polignac number, because 12385285 - 29 = 12384773 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 12385285.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 2005 + ... + 5365.

It is an arithmetic number, because the mean of its divisors is an integer number (1028772).

Almost surely, 212385285 is an apocalyptic number.

It is an amenable number.

12385285 is a deficient number, since it is larger than the sum of its proper divisors (4075067).

12385285 is a wasteful number, since it uses less digits than its factorization.

12385285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3444.

The product of its digits is 19200, while the sum is 34.

The square root of 12385285 is about 3519.2733624997. The cubic root of 12385285 is about 231.3673122821.

The spelling of 12385285 in words is "twelve million, three hundred eighty-five thousand, two hundred eighty-five".

Divisors: 1 5 11 55 67 335 737 3361 3685 16805 36971 184855 225187 1125935 2477057 12385285