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12132013404 = 2237643224617
BaseRepresentation
bin10110100110001111…
…11101010101011100
31011022111112010200210
423103013331111130
5144321243412104
65323503052420
7606433261320
oct132307752534
934274463623
1012132013404
115166229265
122426ba1110
1311b4606874
14831383980
154b014a989
hex2d31fd55c

12132013404 has 48 divisors (see below), whose sum is σ = 32402494208. Its totient is φ = 3460883328.

The previous prime is 12132013363. The next prime is 12132013423. The reversal of 12132013404 is 40431023121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58297 + ... + 166320.

Almost surely, 212132013404 is an apocalyptic number.

12132013404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12132013404 is an abundant number, since it is smaller than the sum of its proper divisors (20270480804).

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

12132013404 is a wasteful number, since it uses less digits than its factorization.

12132013404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225274 (or 225272 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 12132013404 its reverse (40431023121), we get a palindrome (52563036525).

The spelling of 12132013404 in words is "twelve billion, one hundred thirty-two million, thirteen thousand, four hundred four".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 643 1286 1929 2572 3858 4501 7716 9002 13503 18004 27006 54012 224617 449234 673851 898468 1347702 1572319 2695404 3144638 4716957 6289276 9433914 18867828 144428731 288857462 433286193 577714924 866572386 1011001117 1733144772 2022002234 3033003351 4044004468 6066006702 12132013404