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14232809 = 17478147
BaseRepresentation
bin110110010010…
…110011101001
3222210002202002
4312102303221
512120422214
61225020345
7231656033
oct66226351
928702662
1014232809
118041358
1249246b5
132c443a6
141c66c53
1513b21de
hexd92ce9

14232809 has 4 divisors (see below), whose sum is σ = 14242704. Its totient is φ = 14222916.

The previous prime is 14232797. The next prime is 14232811. The reversal of 14232809 is 90823241.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90823241 = 412215201.

It is a cyclic number.

It is not a de Polignac number, because 14232809 - 212 = 14228713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14232209) 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, 2327 + ... + 5820.

It is an arithmetic number, because the mean of its divisors is an integer number (3560676).

Almost surely, 214232809 is an apocalyptic number.

It is an amenable number.

14232809 is a deficient number, since it is larger than the sum of its proper divisors (9895).

14232809 is an equidigital number, since it uses as much as digits as its factorization.

14232809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9894.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 14232809 is about 3772.6395269095. The cubic root of 14232809 is about 242.3428478376.

It can be divided in two parts, 142 and 32809, that multiplied together give a triangular number (4658878 = T3052).

The spelling of 14232809 in words is "fourteen million, two hundred thirty-two thousand, eight hundred nine".

Divisors: 1 1747 8147 14232809