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13260715 = 513316581
BaseRepresentation
bin110010100101…
…011110101011
3220221201021121
4302211132223
511343320330
61152120111
7220466656
oct62453653
926851247
1013260715
117537a76
124536037
132993aa0
141a9289d
15126e17a
hexca57ab

13260715 has 16 divisors (see below), whose sum is σ = 17692416. Its totient is φ = 9475200.

The previous prime is 13260713. The next prime is 13260749. The reversal of 13260715 is 51706231.

It is not a de Polignac number, because 13260715 - 21 = 13260713 is a prime.

It is a super-2 number, since 2×132607152 = 351693124622450, which contains 22 as substring.

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 13260715.

It is not an unprimeable number, because it can be changed into a prime (13260713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1276 + ... + 5305.

It is an arithmetic number, because the mean of its divisors is an integer number (1105776).

Almost surely, 213260715 is an apocalyptic number.

13260715 is a deficient number, since it is larger than the sum of its proper divisors (4431701).

13260715 is a wasteful number, since it uses less digits than its factorization.

13260715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6630.

The product of its (nonzero) digits is 1260, while the sum is 25.

The square root of 13260715 is about 3641.5264656460. The cubic root of 13260715 is about 236.6949436116.

Adding to 13260715 its reverse (51706231), we get a palindrome (64966946).

The spelling of 13260715 in words is "thirteen million, two hundred sixty thousand, seven hundred fifteen".

Divisors: 1 5 13 31 65 155 403 2015 6581 32905 85553 204011 427765 1020055 2652143 13260715