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14512681 = 31468151
BaseRepresentation
bin110111010111…
…001000101001
31000022022122201
4313113020221
512203401211
61235020201
7234233011
oct67271051
930268581
1014512681
118212657
124a3a661
1330118b1
141cdac41
15141a0c1
hexdd7229

14512681 has 4 divisors (see below), whose sum is σ = 14980864. Its totient is φ = 14044500.

The previous prime is 14512661. The next prime is 14512691. The reversal of 14512681 is 18621541.

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: 18621541 = 47396203.

It is a cyclic number.

It is not a de Polignac number, because 14512681 - 25 = 14512649 is a prime.

It is a super-2 number, since 2×145126812 = 421235819615522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14512601) 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, 234045 + ... + 234106.

It is an arithmetic number, because the mean of its divisors is an integer number (3745216).

Almost surely, 214512681 is an apocalyptic number.

It is an amenable number.

14512681 is a deficient number, since it is larger than the sum of its proper divisors (468183).

14512681 is an equidigital number, since it uses as much as digits as its factorization.

14512681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468182.

The product of its digits is 1920, while the sum is 28.

The square root of 14512681 is about 3809.5512859128. The cubic root of 14512681 is about 243.9210138050.

The spelling of 14512681 in words is "fourteen million, five hundred twelve thousand, six hundred eighty-one".

Divisors: 1 31 468151 14512681