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12708690 = 2351724919
BaseRepresentation
bin110000011110…
…101101010010
3212220200001020
4300132231102
511223134230
61132220310
7213010401
oct60365522
925820036
1012708690
1171a0255
12430a696
13282c747
14198b638
1511b0810
hexc1eb52

12708690 has 32 divisors (see below), whose sum is σ = 32296320. Its totient is φ = 3189504.

The previous prime is 12708677. The next prime is 12708691. The reversal of 12708690 is 9680721.

12708690 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×127086902 = 323021603032200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12708691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11950 + ... + 12969.

It is an arithmetic number, because the mean of its divisors is an integer number (1009260).

Almost surely, 212708690 is an apocalyptic number.

12708690 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12708690 is an abundant number, since it is smaller than the sum of its proper divisors (19587630).

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

12708690 is a wasteful number, since it uses less digits than its factorization.

12708690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24946.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 12708690 is about 3564.9249641472. The cubic root of 12708690 is about 233.3638576847.

The spelling of 12708690 in words is "twelve million, seven hundred eight thousand, six hundred ninety".

Divisors: 1 2 3 5 6 10 15 17 30 34 51 85 102 170 255 510 24919 49838 74757 124595 149514 249190 373785 423623 747570 847246 1270869 2118115 2541738 4236230 6354345 12708690