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13934185 = 56014637
BaseRepresentation
bin110101001001…
…111001101001
3222012221002221
4311021321221
512031343220
61214354041
7226303306
oct65117151
928187087
1013934185
117957a61
1247bb921
132b6b4a5
141bca0ad
1513539aa
hexd49e69

13934185 has 8 divisors (see below), whose sum is σ = 16752456. Its totient is φ = 11126400.

The previous prime is 13934183. The next prime is 13934189. The reversal of 13934185 is 58143931.

It can be written as a sum of positive squares in 4 ways, for example, as 1907161 + 12027024 = 1381^2 + 3468^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 13934185 - 21 = 13934183 is a prime.

It is a super-2 number, since 2×139341852 = 388323023228450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13934185.

It is not an unprimeable number, because it can be changed into a prime (13934183) 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 7 ways as a sum of consecutive naturals, for example, 687 + ... + 5323.

It is an arithmetic number, because the mean of its divisors is an integer number (2094057).

Almost surely, 213934185 is an apocalyptic number.

It is an amenable number.

13934185 is a deficient number, since it is larger than the sum of its proper divisors (2818271).

13934185 is an equidigital number, since it uses as much as digits as its factorization.

13934185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5243.

The product of its digits is 12960, while the sum is 34.

The square root of 13934185 is about 3732.8521267256. The cubic root of 13934185 is about 240.6359580100.

The spelling of 13934185 in words is "thirteen million, nine hundred thirty-four thousand, one hundred eighty-five".

Divisors: 1 5 601 3005 4637 23185 2786837 13934185