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12384987 = 35377893
BaseRepresentation
bin101111001111…
…101011011011
3212022020000020
4233033223123
511132304422
61121241523
7210161556
oct57175333
925266006
1012384987
116a9a02a
1241932a3
1327482c4
14190569d
15114995c
hexbcfadb

12384987 has 8 divisors (see below), whose sum is σ = 16825104. Its totient is φ = 8100768.

The previous prime is 12384949. The next prime is 12384991. The reversal of 12384987 is 78948321.

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

It is not a de Polignac number, because 12384987 - 27 = 12384859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12384917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38788 + ... + 39105.

It is an arithmetic number, because the mean of its divisors is an integer number (2103138).

Almost surely, 212384987 is an apocalyptic number.

12384987 is a deficient number, since it is larger than the sum of its proper divisors (4440117).

12384987 is an equidigital number, since it uses as much as digits as its factorization.

12384987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77949.

The product of its digits is 96768, while the sum is 42.

The square root of 12384987 is about 3519.2310239596. The cubic root of 12384987 is about 231.3654566388.

The spelling of 12384987 in words is "twelve million, three hundred eighty-four thousand, nine hundred eighty-seven".

Divisors: 1 3 53 159 77893 233679 4128329 12384987