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13170481 = 47280223
BaseRepresentation
bin110010001111…
…011100110001
3220210010111121
4302033130301
511332423411
61150142241
7216642622
oct62173461
926703447
1013170481
1174861a5
1244b1981
1329619ac
141a6ba49
151252571
hexc8f731

13170481 has 4 divisors (see below), whose sum is σ = 13450752. Its totient is φ = 12890212.

The previous prime is 13170473. The next prime is 13170491. The reversal of 13170481 is 18407131.

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.

It is a cyclic number.

It is not a de Polignac number, because 13170481 - 23 = 13170473 is a prime.

It is a super-2 number, since 2×131704812 = 346923139542722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13170431) 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, 140065 + ... + 140158.

It is an arithmetic number, because the mean of its divisors is an integer number (3362688).

Almost surely, 213170481 is an apocalyptic number.

It is an amenable number.

13170481 is a deficient number, since it is larger than the sum of its proper divisors (280271).

13170481 is an equidigital number, since it uses as much as digits as its factorization.

13170481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280270.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 13170481 is about 3629.1157325167. The cubic root of 13170481 is about 236.1568489551.

The spelling of 13170481 in words is "thirteen million, one hundred seventy thousand, four hundred eighty-one".

Divisors: 1 47 280223 13170481