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13627145 = 57255621
BaseRepresentation
bin110011111110…
…111100001001
3221122022221002
4303332330021
511442032040
61204024345
7223554200
oct63767411
927568832
1013627145
117768304
1246920b5
132a917cc
141b4a237
1512e2a15
hexcfef09

13627145 has 12 divisors (see below), whose sum is σ = 19022724. Its totient is φ = 9344160.

The previous prime is 13627139. The next prime is 13627147. The reversal of 13627145 is 54172631.

It can be written as a sum of positive squares in 2 ways, for example, as 2524921 + 11102224 = 1589^2 + 3332^2 .

It is not a de Polignac number, because 13627145 - 28 = 13626889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13627147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27566 + ... + 28055.

It is an arithmetic number, because the mean of its divisors is an integer number (1585227).

Almost surely, 213627145 is an apocalyptic number.

It is an amenable number.

13627145 is a deficient number, since it is larger than the sum of its proper divisors (5395579).

13627145 is an equidigital number, since it uses as much as digits as its factorization.

13627145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55640 (or 55633 counting only the distinct ones).

The product of its digits is 5040, while the sum is 29.

The square root of 13627145 is about 3691.4963090866. The cubic root of 13627145 is about 238.8553421635.

Adding to 13627145 its reverse (54172631), we get a palindrome (67799776).

The spelling of 13627145 in words is "thirteen million, six hundred twenty-seven thousand, one hundred forty-five".

Divisors: 1 5 7 35 49 245 55621 278105 389347 1946735 2725429 13627145