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13305269 = 66120129
BaseRepresentation
bin110010110000…
…010110110101
3221000222101202
4302300112311
511401232034
61153102245
7221043605
oct62602665
927028352
1013305269
11756849a
124557985
1329ab153
141aa4c05
15127c47e
hexcb05b5

13305269 has 4 divisors (see below), whose sum is σ = 13326060. Its totient is φ = 13284480.

The previous prime is 13305241. The next prime is 13305307. The reversal of 13305269 is 96250331.

13305269 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96250331 = 234184797.

It can be written as a sum of positive squares in 2 ways, for example, as 11303044 + 2002225 = 3362^2 + 1415^2 .

It is a cyclic number.

It is not a de Polignac number, because 13305269 - 28 = 13305013 is a prime.

It is a super-2 number, since 2×133052692 = 354060366324722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13305209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9404 + ... + 10725.

It is an arithmetic number, because the mean of its divisors is an integer number (3331515).

Almost surely, 213305269 is an apocalyptic number.

It is an amenable number.

13305269 is a deficient number, since it is larger than the sum of its proper divisors (20791).

13305269 is an equidigital number, since it uses as much as digits as its factorization.

13305269 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20790.

The product of its (nonzero) digits is 4860, while the sum is 29.

The square root of 13305269 is about 3647.6388253225. The cubic root of 13305269 is about 236.9597337040.

The spelling of 13305269 in words is "thirteen million, three hundred five thousand, two hundred sixty-nine".

Divisors: 1 661 20129 13305269