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12706993 = 133131531
BaseRepresentation
bin110000011110…
…010010110001
3212220120201101
4300132102301
511223110433
61132204401
7213002425
oct60362261
925816641
1012706993
117199a52
124309701
13282ba40
14198ab85
1511b007d
hexc1e4b1

12706993 has 8 divisors (see below), whose sum is σ = 14126336. Its totient is φ = 11350800.

The previous prime is 12706987. The next prime is 12706997. The reversal of 12706993 is 39960721.

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

It is a cyclic number.

It is not a de Polignac number, because 12706993 - 25 = 12706961 is a prime.

It is a super-2 number, since 2×127069932 = 322935342204098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12706997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15363 + ... + 16168.

It is an arithmetic number, because the mean of its divisors is an integer number (1765792).

Almost surely, 212706993 is an apocalyptic number.

12706993 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

12706993 is a deficient number, since it is larger than the sum of its proper divisors (1419343).

12706993 is a wasteful number, since it uses less digits than its factorization.

12706993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31575.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 12706993 is about 3564.6869427763. The cubic root of 12706993 is about 233.3534701442.

The spelling of 12706993 in words is "twelve million, seven hundred six thousand, nine hundred ninety-three".

Divisors: 1 13 31 403 31531 409903 977461 12706993