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13867293 = 311420221
BaseRepresentation
bin110100111001…
…100100011101
3222002112100110
4310321210131
512022223133
61213120233
7225604266
oct64714435
928075313
1013867293
117911780
124789079
132b46bcb
141bad96d
15133dc63
hexd3991d

13867293 has 8 divisors (see below), whose sum is σ = 20170656. Its totient is φ = 8404400.

The previous prime is 13867279. The next prime is 13867297. The reversal of 13867293 is 39276831.

13867293 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 13867293 - 28 = 13867037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13867297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 210078 + ... + 210143.

It is an arithmetic number, because the mean of its divisors is an integer number (2521332).

Almost surely, 213867293 is an apocalyptic number.

It is an amenable number.

13867293 is a deficient number, since it is larger than the sum of its proper divisors (6303363).

13867293 is a wasteful number, since it uses less digits than its factorization.

13867293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420235.

The product of its digits is 54432, while the sum is 39.

The square root of 13867293 is about 3723.8814427959. The cubic root of 13867293 is about 240.2502771094.

The spelling of 13867293 in words is "thirteen million, eight hundred sixty-seven thousand, two hundred ninety-three".

Divisors: 1 3 11 33 420221 1260663 4622431 13867293