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14938643 = 22765809
BaseRepresentation
bin111000111111…
…001000010011
31001002221222002
4320333020103
512311014033
61252104215
7240655616
oct70771023
931087862
1014938643
118483695
12500506b
133130745
141dac17d
1514a13e8
hexe3f213

14938643 has 4 divisors (see below), whose sum is σ = 15004680. Its totient is φ = 14872608.

The previous prime is 14938619. The next prime is 14938667. The reversal of 14938643 is 34683941.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 34683941 = 42738117.

It is an interprime number because it is at equal distance from previous prime (14938619) and next prime (14938667).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-14938643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 14938597 and 14938606.

It is not an unprimeable number, because it can be changed into a prime (14938603) 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, 32678 + ... + 33131.

It is an arithmetic number, because the mean of its divisors is an integer number (3751170).

Almost surely, 214938643 is an apocalyptic number.

14938643 is a deficient number, since it is larger than the sum of its proper divisors (66037).

14938643 is an equidigital number, since it uses as much as digits as its factorization.

14938643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66036.

The product of its digits is 62208, while the sum is 38.

The square root of 14938643 is about 3865.0540746541. The cubic root of 14938643 is about 246.2844826182.

The spelling of 14938643 in words is "fourteen million, nine hundred thirty-eight thousand, six hundred forty-three".

Divisors: 1 227 65809 14938643