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13706173 = 131054321
BaseRepresentation
bin110100010010…
…001110111101
3221210100100001
4310102032331
512002044143
61205434301
7224333455
oct64221675
927710301
1013706173
117811718
12470b991
132abb780
141b6ad65
15130b14d
hexd123bd

13706173 has 4 divisors (see below), whose sum is σ = 14760508. Its totient is φ = 12651840.

The previous prime is 13706167. The next prime is 13706213. The reversal of 13706173 is 37160731.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37160731 = 79470389.

It can be written as a sum of positive squares in 2 ways, for example, as 2125764 + 11580409 = 1458^2 + 3403^2 .

It is a cyclic number.

It is not a de Polignac number, because 13706173 - 25 = 13706141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13706773) 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, 527148 + ... + 527173.

It is an arithmetic number, because the mean of its divisors is an integer number (3690127).

Almost surely, 213706173 is an apocalyptic number.

13706173 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

13706173 is a deficient number, since it is larger than the sum of its proper divisors (1054335).

13706173 is a wasteful number, since it uses less digits than its factorization.

13706173 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054334.

The product of its (nonzero) digits is 2646, while the sum is 28.

The square root of 13706173 is about 3702.1848954367. The cubic root of 13706173 is about 239.3161842878.

The spelling of 13706173 in words is "thirteen million, seven hundred six thousand, one hundred seventy-three".

Divisors: 1 13 1054321 13706173