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13026505 = 517331463
BaseRepresentation
bin110001101100…
…010011001001
3220111211000011
4301230103021
511313322010
61143111521
7215503102
oct61542311
926454004
1013026505
117398008
1244425a1
1329112bb
141a313a9
151224a8a
hexc6c4c9

13026505 has 16 divisors (see below), whose sum is σ = 16637184. Its totient is φ = 9757440.

The previous prime is 13026493. The next prime is 13026511. The reversal of 13026505 is 50562031.

It is a happy number.

It is not a de Polignac number, because 13026505 - 29 = 13025993 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27904 + ... + 28366.

It is an arithmetic number, because the mean of its divisors is an integer number (1039824).

Almost surely, 213026505 is an apocalyptic number.

It is an amenable number.

13026505 is a deficient number, since it is larger than the sum of its proper divisors (3610679).

13026505 is a wasteful number, since it uses less digits than its factorization.

13026505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 816.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 13026505 is about 3609.2249860600. The cubic root of 13026505 is about 235.2931606150.

Adding to 13026505 its reverse (50562031), we get a palindrome (63588536).

It can be divided in two parts, 13026 and 505, that added together give a palindrome (13531).

The spelling of 13026505 in words is "thirteen million, twenty-six thousand, five hundred five".

Divisors: 1 5 17 85 331 463 1655 2315 5627 7871 28135 39355 153253 766265 2605301 13026505