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12380388 = 2234323993
BaseRepresentation
bin101111001110…
…100011100100
3212021222200220
4233032203210
511132133023
61121204340
7210142266
oct57164344
925258626
1012380388
116a96629
1241906b0
132746197
141903b36
1511483e3
hexbce8e4

12380388 has 24 divisors (see below), whose sum is σ = 29560608. Its totient is φ = 4030656.

The previous prime is 12380351. The next prime is 12380413. The reversal of 12380388 is 88308321.

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 7 ways as a sum of consecutive naturals, for example, 11481 + ... + 12512.

It is an arithmetic number, because the mean of its divisors is an integer number (1231692).

Almost surely, 212380388 is an apocalyptic number.

It is an amenable number.

12380388 is an abundant number, since it is smaller than the sum of its proper divisors (17180220).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12380388 is a wasteful number, since it uses less digits than its factorization.

12380388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24043 (or 24041 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 12380388 is about 3518.5775535008. The cubic root of 12380388 is about 231.3368149328.

The spelling of 12380388 in words is "twelve million, three hundred eighty thousand, three hundred eighty-eight".

Divisors: 1 2 3 4 6 12 43 86 129 172 258 516 23993 47986 71979 95972 143958 287916 1031699 2063398 3095097 4126796 6190194 12380388