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12303885 = 351126779
BaseRepresentation
bin101110111011…
…111000001101
3212011002202110
4232323320031
511122211020
61115414233
7206403246
oct56737015
925132673
1012303885
116a44100
124154379
13271a409
1418c3ccd
1511308e0
hexbbbe0d

12303885 has 24 divisors (see below), whose sum is σ = 21641760. Its totient is φ = 5964640.

The previous prime is 12303881. The next prime is 12303911. The reversal of 12303885 is 58830321.

It is a happy number.

12303885 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12303885 - 22 = 12303881 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303881) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1575 + ... + 5204.

It is an arithmetic number, because the mean of its divisors is an integer number (901740).

Almost surely, 212303885 is an apocalyptic number.

12303885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12303885 is a deficient number, since it is larger than the sum of its proper divisors (9337875).

12303885 is a wasteful number, since it uses less digits than its factorization.

12303885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6809 (or 6798 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 12303885 is about 3507.6894104239. The cubic root of 12303885 is about 230.8593247793.

It can be divided in two parts, 1230 and 3885, that added together give a palindrome (5115).

The spelling of 12303885 in words is "twelve million, three hundred three thousand, eight hundred eighty-five".

Divisors: 1 3 5 11 15 33 55 121 165 363 605 1815 6779 20337 33895 74569 101685 223707 372845 820259 1118535 2460777 4101295 12303885