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14385881 = 16786143
BaseRepresentation
bin110110111000…
…001011011001
31000001212201102
4312320023121
512140322011
61232201145
7233164226
oct66701331
930055642
1014385881
118136364
1249991b5
132c98c73
141ca694d
1513e273b
hexdb82d9

14385881 has 4 divisors (see below), whose sum is σ = 14472192. Its totient is φ = 14299572.

The previous prime is 14385857. The next prime is 14385919. The reversal of 14385881 is 18858341.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18858341 = 76124781.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14385881 is a prime.

It is a super-2 number, since 2×143858812 = 413907144292322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14385841) 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 3 ways as a sum of consecutive naturals, for example, 42905 + ... + 43238.

It is an arithmetic number, because the mean of its divisors is an integer number (3618048).

Almost surely, 214385881 is an apocalyptic number.

It is an amenable number.

14385881 is a deficient number, since it is larger than the sum of its proper divisors (86311).

14385881 is an equidigital number, since it uses as much as digits as its factorization.

14385881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86310.

The product of its digits is 30720, while the sum is 38.

The square root of 14385881 is about 3792.8723943734. The cubic root of 14385881 is about 243.2085402937.

The spelling of 14385881 in words is "fourteen million, three hundred eighty-five thousand, eight hundred eighty-one".

Divisors: 1 167 86143 14385881