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14747081 = 82917789
BaseRepresentation
bin111000010000…
…010111001001
31000202020012012
4320100113021
512233401311
61244025305
7236230256
oct70202711
930666165
1014747081
118362778
124b32235
1330944ab
141d5c42d
15146478b
hexe105c9

14747081 has 4 divisors (see below), whose sum is σ = 14765700. Its totient is φ = 14728464.

The previous prime is 14747077. The next prime is 14747087. The reversal of 14747081 is 18074741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18074741 = 22978929.

It can be written as a sum of positive squares in 2 ways, for example, as 12187081 + 2560000 = 3491^2 + 1600^2 .

It is a cyclic number.

It is not a de Polignac number, because 14747081 - 22 = 14747077 is a prime.

It is a super-2 number, since 2×147470812 = 434952796041122, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (14747087) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8066 + ... + 9723.

It is an arithmetic number, because the mean of its divisors is an integer number (3691425).

Almost surely, 214747081 is an apocalyptic number.

It is an amenable number.

14747081 is a deficient number, since it is larger than the sum of its proper divisors (18619).

14747081 is an equidigital number, since it uses as much as digits as its factorization.

14747081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18618.

The product of its (nonzero) digits is 6272, while the sum is 32.

The square root of 14747081 is about 3840.1928336999. The cubic root of 14747081 is about 245.2272277574.

The spelling of 14747081 in words is "fourteen million, seven hundred forty-seven thousand, eighty-one".

Divisors: 1 829 17789 14747081