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13206061 = 112109141
BaseRepresentation
bin110010011000…
…001000101101
3220211221022101
4302120020231
511340043221
61151015101
7220151431
oct62301055
926757271
1013206061
1174aaa00
12450a491
132974c4b
141a7a9c1
15125cd91
hexc9822d

13206061 has 6 divisors (see below), whose sum is σ = 14515886. Its totient is φ = 12005400.

The previous prime is 13206043. The next prime is 13206131. The reversal of 13206061 is 16060231.

It can be written as a sum of positive squares in only one way, i.e., 13097161 + 108900 = 3619^2 + 330^2 .

It is not a de Polignac number, because 13206061 - 213 = 13197869 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13206001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 54450 + ... + 54691.

Almost surely, 213206061 is an apocalyptic number.

13206061 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

13206061 is a deficient number, since it is larger than the sum of its proper divisors (1309825).

13206061 is a wasteful number, since it uses less digits than its factorization.

13206061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109163 (or 109152 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 13206061 is about 3634.0144468618. The cubic root of 13206061 is about 236.3693166602.

Adding to 13206061 its reverse (16060231), we get a palindrome (29266292).

It can be divided in two parts, 1320 and 6061, that added together give a triangular number (7381 = T121).

The spelling of 13206061 in words is "thirteen million, two hundred six thousand, sixty-one".

Divisors: 1 11 121 109141 1200551 13206061