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13108965 = 352337997
BaseRepresentation
bin110010000000…
…011011100101
3220200000010020
4302000123211
511323441330
61144545353
7216265362
oct62003345
926600106
1013108965
117443a61
124482259
13293c9ac
141a53469
15123e210
hexc806e5

13108965 has 16 divisors (see below), whose sum is σ = 21886848. Its totient is φ = 6687296.

The previous prime is 13108933. The next prime is 13108981. The reversal of 13108965 is 56980131.

It is not a de Polignac number, because 13108965 - 25 = 13108933 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18654 + ... + 19343.

It is an arithmetic number, because the mean of its divisors is an integer number (1367928).

Almost surely, 213108965 is an apocalyptic number.

13108965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13108965 is a deficient number, since it is larger than the sum of its proper divisors (8777883).

13108965 is a wasteful number, since it uses less digits than its factorization.

13108965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38028.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 13108965 is about 3620.6304699596. The cubic root of 13108965 is about 235.7885986339.

The spelling of 13108965 in words is "thirteen million, one hundred eight thousand, nine hundred sixty-five".

Divisors: 1 3 5 15 23 69 115 345 37997 113991 189985 569955 873931 2621793 4369655 13108965