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14130809 = 7112379101
BaseRepresentation
bin110101111001…
…111001111001
3222120220211022
4311321321321
512104141214
61222512225
7231052460
oct65717171
928526738
1014130809
117a81760
124895675
132c09b34
141c3b9d7
151391d8e
hexd79e79

14130809 has 32 divisors (see below), whose sum is σ = 18800640. Its totient is φ = 10296000.

The previous prime is 14130793. The next prime is 14130817. The reversal of 14130809 is 90803141.

It is not a de Polignac number, because 14130809 - 24 = 14130793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14130899) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139859 + ... + 139959.

It is an arithmetic number, because the mean of its divisors is an integer number (587520).

Almost surely, 214130809 is an apocalyptic number.

It is an amenable number.

14130809 is a deficient number, since it is larger than the sum of its proper divisors (4669831).

14130809 is a wasteful number, since it uses less digits than its factorization.

14130809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 14130809 is about 3759.0968330172. The cubic root of 14130809 is about 241.7625394215.

The spelling of 14130809 in words is "fourteen million, one hundred thirty thousand, eight hundred nine".

Divisors: 1 7 11 23 77 79 101 161 253 553 707 869 1111 1771 1817 2323 6083 7777 7979 12719 16261 19987 25553 55853 87769 139909 178871 183517 614383 1284619 2018687 14130809