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12708929 = 19719421
BaseRepresentation
bin110000011110…
…110001000001
3212220200101002
4300132301001
511223141204
61132221345
7213011162
oct60366101
925820332
1012708929
1171a0452
12430a855
13282c89c
14198b769
1511b091e
hexc1ec41

12708929 has 8 divisors (see below), whose sum is σ = 13567680. Its totient is φ = 11869200.

The previous prime is 12708919. The next prime is 12708937. The reversal of 12708929 is 92980721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12708929 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12708892 and 12708901.

It is not an unprimeable number, because it can be changed into a prime (12708919) 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, 3362 + ... + 6059.

It is an arithmetic number, because the mean of its divisors is an integer number (1695960).

Almost surely, 212708929 is an apocalyptic number.

12708929 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12708929 is a deficient number, since it is larger than the sum of its proper divisors (858751).

12708929 is an equidigital number, since it uses as much as digits as its factorization.

12708929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9511.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 12708929 is about 3564.9584850318. The cubic root of 12708929 is about 233.3653205580.

The spelling of 12708929 in words is "twelve million, seven hundred eight thousand, nine hundred twenty-nine".

Divisors: 1 19 71 1349 9421 178999 668891 12708929