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13132215 = 325292347
BaseRepresentation
bin110010000110…
…000110110111
3220201012000100
4302012012313
511330212330
61145245143
7216423225
oct62060667
926635010
1013132215
11745a478
1244937b3
13294a455
141a5bb15
151246060
hexc861b7

13132215 has 36 divisors (see below), whose sum is σ = 23642424. Its totient is φ = 6742848.

The previous prime is 13132193. The next prime is 13132219. The reversal of 13132215 is 51223131.

13132215 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 not a de Polignac number, because 13132215 - 28 = 13131959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13132219) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 37672 + ... + 38018.

It is an arithmetic number, because the mean of its divisors is an integer number (656734).

Almost surely, 213132215 is an apocalyptic number.

13132215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13132215 is a deficient number, since it is larger than the sum of its proper divisors (10510209).

13132215 is a wasteful number, since it uses less digits than its factorization.

13132215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416 (or 384 counting only the distinct ones).

The product of its digits is 180, while the sum is 18.

The square root of 13132215 is about 3623.8398143406. The cubic root of 13132215 is about 235.9279141611.

Adding to 13132215 its reverse (51223131), we get a palindrome (64355346).

The spelling of 13132215 in words is "thirteen million, one hundred thirty-two thousand, two hundred fifteen".

Divisors: 1 3 5 9 15 29 45 87 145 261 347 435 841 1041 1305 1735 2523 3123 4205 5205 7569 10063 12615 15615 30189 37845 50315 90567 150945 291827 452835 875481 1459135 2626443 4377405 13132215