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13985361 = 3213119533
BaseRepresentation
bin110101010110…
…011001010001
3222022112022100
4311112121101
512040012421
61215431013
7226605435
oct65263121
928275270
1013985361
117992455
124825469
132b88880
141c009c5
151363c26
hexd56651

13985361 has 12 divisors (see below), whose sum is σ = 21755188. Its totient is φ = 8606304.

The previous prime is 13985353. The next prime is 13985381. The reversal of 13985361 is 16358931.

It is a happy number.

13985361 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 2 ways, for example, as 4100625 + 9884736 = 2025^2 + 3144^2 .

It is not a de Polignac number, because 13985361 - 23 = 13985353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13985341) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59650 + ... + 59883.

Almost surely, 213985361 is an apocalyptic number.

It is an amenable number.

13985361 is a deficient number, since it is larger than the sum of its proper divisors (7769827).

13985361 is a wasteful number, since it uses less digits than its factorization.

13985361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119552 (or 119549 counting only the distinct ones).

The product of its digits is 19440, while the sum is 36.

The square root of 13985361 is about 3739.7006564697. The cubic root of 13985361 is about 240.9301921860.

The spelling of 13985361 in words is "thirteen million, nine hundred eighty-five thousand, three hundred sixty-one".

Divisors: 1 3 9 13 39 117 119533 358599 1075797 1553929 4661787 13985361