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12388011 = 317323869
BaseRepresentation
bin101111010000…
…011010101011
3212022101011020
4233100122223
511132404021
61121303523
7210203436
oct57203253
925271136
1012388011
116aa1329
124194ba3
1327497ac
14190681d
15114a7c6
hexbd06ab

12388011 has 8 divisors (see below), whose sum is σ = 16613520. Its totient is φ = 8210592.

The previous prime is 12387979. The next prime is 12388031. The reversal of 12388011 is 11088321.

12388011 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 12388011 - 25 = 12387979 is a prime.

It is a super-2 number, since 2×123880112 = 306925633072242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12388031) 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 7 ways as a sum of consecutive naturals, for example, 11416 + ... + 12453.

It is an arithmetic number, because the mean of its divisors is an integer number (2076690).

Almost surely, 212388011 is an apocalyptic number.

12388011 is a deficient number, since it is larger than the sum of its proper divisors (4225509).

12388011 is a wasteful number, since it uses less digits than its factorization.

12388011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24045.

The product of its (nonzero) digits is 384, while the sum is 24.

The square root of 12388011 is about 3519.6606370501. The cubic root of 12388011 is about 231.3842856777.

The spelling of 12388011 in words is "twelve million, three hundred eighty-eight thousand, eleven".

Divisors: 1 3 173 519 23869 71607 4129337 12388011