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12988926 = 23229149167
BaseRepresentation
bin110001100011…
…000111111110
3220102220110100
4301203013332
511311121201
61142221530
7215255406
oct61430776
926386410
1012988926
117371855
1244248a6
1328ca172
141a21806
151218886
hexc631fe

12988926 has 48 divisors (see below), whose sum is σ = 29484000. Its totient is φ = 4127424.

The previous prime is 12988891. The next prime is 12988931. The reversal of 12988926 is 62988921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77695 + ... + 77861.

It is an arithmetic number, because the mean of its divisors is an integer number (614250).

Almost surely, 212988926 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12988926, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14742000).

12988926 is an abundant number, since it is smaller than the sum of its proper divisors (16495074).

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

12988926 is a wasteful number, since it uses less digits than its factorization.

12988926 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353 (or 350 counting only the distinct ones).

The product of its digits is 124416, while the sum is 45.

The square root of 12988926 is about 3604.0152607890. The cubic root of 12988926 is about 235.0666839580.

The spelling of 12988926 in words is "twelve million, nine hundred eighty-eight thousand, nine hundred twenty-six".

Divisors: 1 2 3 6 9 18 29 58 87 149 167 174 261 298 334 447 501 522 894 1002 1341 1503 2682 3006 4321 4843 8642 9686 12963 14529 24883 25926 29058 38889 43587 49766 74649 77778 87174 149298 223947 447894 721607 1443214 2164821 4329642 6494463 12988926