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13706845 = 51747273
BaseRepresentation
bin110100010010…
…011001011101
3221210101020221
4310102121131
512002104340
61205441341
7224335435
oct64223135
927711227
1013706845
117812179
124710251
132abbb79
141b6b2c5
15130b44a
hexd1265d

13706845 has 24 divisors (see below), whose sum is σ = 18037944. Its totient is φ = 9962496.

The previous prime is 13706843. The next prime is 13706851. The reversal of 13706845 is 54860731.

13706845 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3189796 + 10517049 = 1786^2 + 3243^2 .

It is not a de Polignac number, because 13706845 - 21 = 13706843 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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 13706845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13706843) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 187729 + ... + 187801.

It is an arithmetic number, because the mean of its divisors is an integer number (751581).

Almost surely, 213706845 is an apocalyptic number.

It is an amenable number.

13706845 is a deficient number, since it is larger than the sum of its proper divisors (4331099).

13706845 is an equidigital number, since it uses as much as digits as its factorization.

13706845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189 (or 142 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 13706845 is about 3702.2756515419. The cubic root of 13706845 is about 239.3200953685.

The spelling of 13706845 in words is "thirteen million, seven hundred six thousand, eight hundred forty-five".

Divisors: 1 5 17 47 73 85 235 365 799 1241 2209 3431 3995 6205 11045 17155 37553 58327 161257 187765 291635 806285 2741369 13706845