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13768207 = 19517057
BaseRepresentation
bin110100100001…
…011000001111
3221220111102121
4310201120033
512011040312
61211033411
7225012355
oct64413017
927814377
1013768207
117854292
12473b867
132b10a8b
141b857d5
15131e707
hexd2160f

13768207 has 4 divisors (see below), whose sum is σ = 13777216. Its totient is φ = 13759200.

The previous prime is 13768201. The next prime is 13768229. The reversal of 13768207 is 70286731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-13768207 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13768201) 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 3 ways as a sum of consecutive naturals, for example, 1578 + ... + 5479.

It is an arithmetic number, because the mean of its divisors is an integer number (3444304).

Almost surely, 213768207 is an apocalyptic number.

13768207 is a deficient number, since it is larger than the sum of its proper divisors (9009).

13768207 is an equidigital number, since it uses as much as digits as its factorization.

13768207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9008.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 13768207 is about 3710.5534627600. The cubic root of 13768207 is about 239.6766884951.

The spelling of 13768207 in words is "thirteen million, seven hundred sixty-eight thousand, two hundred seven".

Divisors: 1 1951 7057 13768207