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13135320 = 233251131107
BaseRepresentation
bin110010000110…
…110111011000
3220201100021100
4302012313120
511330312240
61145311400
7216435252
oct62066730
926640240
1013135320
117461840
124495560
13294b9a3
141a5ccd2
151246e30
hexc86dd8

13135320 has 192 divisors, whose sum is σ = 48522240. Its totient is φ = 3052800.

The previous prime is 13135307. The next prime is 13135321. The reversal of 13135320 is 2353131.

13135320 is a `hidden beast` number, since 131 + 3 + 532 + 0 = 666.

13135320 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 13135293 and 13135302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13135321) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 122707 + ... + 122813.

It is an arithmetic number, because the mean of its divisors is an integer number (252720).

Almost surely, 213135320 is an apocalyptic number.

13135320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 13135320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24261120).

13135320 is an abundant number, since it is smaller than the sum of its proper divisors (35386920).

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

13135320 is a wasteful number, since it uses less digits than its factorization.

13135320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 18.

The square root of 13135320 is about 3624.2682019961. The cubic root of 13135320 is about 235.9465070754.

Adding to 13135320 its reverse (2353131), we get a palindrome (15488451).

The spelling of 13135320 in words is "thirteen million, one hundred thirty-five thousand, three hundred twenty".