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12387201324 = 2232234628999
BaseRepresentation
bin10111000100101010…
…11011000100101100
31011222021201000201020
423202111123010230
5200332110420244
65405100414140
7615652321401
oct134225330454
934867630636
1012387201324
115287285773
122498547350
131225444734
148572102a8
154c7756d19
hex2e255b12c

12387201324 has 24 divisors (see below), whose sum is σ = 29033088000. Its totient is φ = 4110550224.

The previous prime is 12387201311. The next prime is 12387201329. The reversal of 12387201324 is 42310278321.

It is not an unprimeable number, because it can be changed into a prime (12387201329) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2311824 + ... + 2317175.

It is an arithmetic number, because the mean of its divisors is an integer number (1209712000).

Almost surely, 212387201324 is an apocalyptic number.

It is an amenable number.

12387201324 is an abundant number, since it is smaller than the sum of its proper divisors (16645886676).

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

12387201324 is a wasteful number, since it uses less digits than its factorization.

12387201324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4629229 (or 4629227 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

Adding to 12387201324 its reverse (42310278321), we get a palindrome (54697479645).

The spelling of 12387201324 in words is "twelve billion, three hundred eighty-seven million, two hundred one thousand, three hundred twenty-four".

Divisors: 1 2 3 4 6 12 223 446 669 892 1338 2676 4628999 9257998 13886997 18515996 27773994 55547988 1032266777 2064533554 3096800331 4129067108 6193600662 12387201324