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13727025 = 3252132192
BaseRepresentation
bin110100010111…
…010100110001
3221211101221100
4310113110301
512003231100
61210115013
7224451324
oct64272461
927741840
1013727025
117826354
12471ba69
132ac8100
141b747bb
151312400
hexd17531

13727025 has 81 divisors (see below), whose sum is σ = 28098369. Its totient is φ = 6402240.

The previous prime is 13727023. The next prime is 13727039. The reversal of 13727025 is 52072731.

The square root of 13727025 is 3705.

It is a perfect power (a square), and thus also a powerful number.

13727025 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 4 ways, for example, as 3538161 + 10188864 = 1881^2 + 3192^2 .

It is not a de Polignac number, because 13727025 - 21 = 13727023 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 13727025.

It is not an unprimeable number, because it can be changed into a prime (13727023) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 722466 + ... + 722484.

Almost surely, 213727025 is an apocalyptic number.

13727025 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13727025 is the 3705-th square number.

13727025 is the 1853-rd centered octagonal number.

It is an amenable number.

13727025 is an abundant number, since it is smaller than the sum of its proper divisors (14371344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13727025 is a wasteful number, since it uses less digits than its factorization.

13727025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80 (or 40 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The cubic root of 13727025 is about 239.4374846822.

Adding to 13727025 its reverse (52072731), we get a palindrome (65799756).

The spelling of 13727025 in words is "thirteen million, seven hundred twenty-seven thousand, twenty-five".

Divisors: 1 3 5 9 13 15 19 25 39 45 57 65 75 95 117 169 171 195 225 247 285 325 361 475 507 585 741 845 855 975 1083 1235 1425 1521 1805 2223 2535 2925 3211 3249 3705 4225 4275 4693 5415 6175 7605 9025 9633 11115 12675 14079 16055 16245 18525 23465 27075 28899 38025 42237 48165 55575 61009 70395 80275 81225 117325 144495 183027 211185 240825 305045 351975 549081 722475 915135 1055925 1525225 2745405 4575675 13727025