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13238125 = 5459359
BaseRepresentation
bin110010011111…
…111101101101
3220220120021221
4302133331231
511342110000
61151423341
7220344055
oct62377555
926816257
1013238125
117521aaa
124524b51
132986714
141a88565
15126761a
hexc9ff6d

13238125 has 20 divisors (see below), whose sum is σ = 16869600. Its totient is φ = 10382000.

The previous prime is 13238101. The next prime is 13238129. The reversal of 13238125 is 52183231.

It is not a de Polignac number, because 13238125 - 27 = 13237997 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a self number, because there is not a number n which added to its sum of digits gives 13238125.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13238129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36696 + ... + 37054.

It is an arithmetic number, because the mean of its divisors is an integer number (843480).

Almost surely, 213238125 is an apocalyptic number.

It is an amenable number.

13238125 is a deficient number, since it is larger than the sum of its proper divisors (3631475).

13238125 is an frugal number, since it uses more digits than its factorization.

13238125 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 438 (or 423 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 13238125 is about 3638.4234223081. The cubic root of 13238125 is about 236.5604617260.

The spelling of 13238125 in words is "thirteen million, two hundred thirty-eight thousand, one hundred twenty-five".

Divisors: 1 5 25 59 125 295 359 625 1475 1795 7375 8975 21181 36875 44875 105905 224375 529525 2647625 13238125