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14812681 = 13287649
BaseRepresentation
bin111000100000…
…011000001001
31000212120011211
4320200120021
512243001211
61245253121
7236622442
oct70403011
930776154
1014812681
1183a7a94
124b641a1
1330b8300
141d782c9
151478e21
hexe20609

14812681 has 6 divisors (see below), whose sum is σ = 16039950. Its totient is φ = 13673088.

The previous prime is 14812673. The next prime is 14812687. The reversal of 14812681 is 18621841.

It can be written as a sum of positive squares in 3 ways, for example, as 67081 + 14745600 = 259^2 + 3840^2 .

It is not a de Polignac number, because 14812681 - 23 = 14812673 is a prime.

It is a super-2 number, since 2×148126812 = 438831036815522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (14812687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43656 + ... + 43993.

It is an arithmetic number, because the mean of its divisors is an integer number (2673325).

Almost surely, 214812681 is an apocalyptic number.

It is an amenable number.

14812681 is a deficient number, since it is larger than the sum of its proper divisors (1227269).

14812681 is an equidigital number, since it uses as much as digits as its factorization.

14812681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87675 (or 87662 counting only the distinct ones).

The product of its digits is 3072, while the sum is 31.

The square root of 14812681 is about 3848.7245939402. The cubic root of 14812681 is about 245.5903077817.

The spelling of 14812681 in words is "fourteen million, eight hundred twelve thousand, six hundred eighty-one".

Divisors: 1 13 169 87649 1139437 14812681