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14363681 = 16218861
BaseRepresentation
bin110110110010…
…110000100001
31000000202021012
4312302300201
512134114211
61231510305
7233042423
oct66626041
930022235
1014363681
118120712
124988395
132c8bb27
141c9c813
1513dad8b
hexdb2c21

14363681 has 4 divisors (see below), whose sum is σ = 14374164. Its totient is φ = 14353200.

The previous prime is 14363669. The next prime is 14363683. The reversal of 14363681 is 18636341.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18636341 = 27296829.

It can be written as a sum of positive squares in 2 ways, for example, as 13075456 + 1288225 = 3616^2 + 1135^2 .

It is a cyclic number.

It is not a de Polignac number, because 14363681 - 218 = 14101537 is a prime.

It is a super-2 number, since 2×143636812 = 412630663739522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14363683) 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, 2810 + ... + 6051.

It is an arithmetic number, because the mean of its divisors is an integer number (3593541).

Almost surely, 214363681 is an apocalyptic number.

It is an amenable number.

14363681 is a deficient number, since it is larger than the sum of its proper divisors (10483).

14363681 is an equidigital number, since it uses as much as digits as its factorization.

14363681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10482.

The product of its digits is 10368, while the sum is 32.

The square root of 14363681 is about 3789.9447225520. The cubic root of 14363681 is about 243.0833710553.

The spelling of 14363681 in words is "fourteen million, three hundred sixty-three thousand, six hundred eighty-one".

Divisors: 1 1621 8861 14363681