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12993567 = 38352183
BaseRepresentation
bin110001100100…
…010000011111
3220110010211020
4301210100133
511311243232
61142255223
7215305056
oct61442037
926403736
1012993567
117375294
124427513
1328cc302
141a2339d
151219e2c
hexc6441f

12993567 has 8 divisors (see below), whose sum is σ = 17533824. Its totient is φ = 8557848.

The previous prime is 12993509. The next prime is 12993571. The reversal of 12993567 is 76539921.

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

It is not a de Polignac number, because 12993567 - 28 = 12993311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12993067) 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, 25843 + ... + 26340.

It is an arithmetic number, because the mean of its divisors is an integer number (2191728).

Almost surely, 212993567 is an apocalyptic number.

12993567 is a deficient number, since it is larger than the sum of its proper divisors (4540257).

12993567 is an equidigital number, since it uses as much as digits as its factorization.

12993567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52269.

The product of its digits is 102060, while the sum is 42.

The square root of 12993567 is about 3604.6590684835. The cubic root of 12993567 is about 235.0946774086.

The spelling of 12993567 in words is "twelve million, nine hundred ninety-three thousand, five hundred sixty-seven".

Divisors: 1 3 83 249 52183 156549 4331189 12993567