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12813095 = 52562619
BaseRepresentation
bin110000111000…
…001100100111
3220002222021002
4300320030213
511240004340
61134343515
7213623651
oct60701447
926088232
1012813095
117261739
12435ab9b
132868119
1419b76d1
1511d1715
hexc38327

12813095 has 4 divisors (see below), whose sum is σ = 15375720. Its totient is φ = 10250472.

The previous prime is 12813091. The next prime is 12813109. The reversal of 12813095 is 59031821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12813095 - 22 = 12813091 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12813091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1281305 + ... + 1281314.

It is an arithmetic number, because the mean of its divisors is an integer number (3843930).

Almost surely, 212813095 is an apocalyptic number.

12813095 is a deficient number, since it is larger than the sum of its proper divisors (2562625).

12813095 is an equidigital number, since it uses as much as digits as its factorization.

12813095 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2562624.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 12813095 is about 3579.5383780594. The cubic root of 12813095 is about 234.0011627283.

The spelling of 12813095 in words is "twelve million, eight hundred thirteen thousand, ninety-five".

Divisors: 1 5 2562619 12813095