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13286188 = 2215121997
BaseRepresentation
bin110010101011…
…101100101100
3221000000020001
4302223230230
511400124223
61152434044
7220634146
oct62535454
927000201
1013286188
117555123
124548924
1329a2566
141a9bc96
1512769ad
hexcabb2c

13286188 has 12 divisors (see below), whose sum is σ = 23405872. Its totient is φ = 6598800.

The previous prime is 13286177. The next prime is 13286191. The reversal of 13286188 is 88168231.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10395 + ... + 11602.

Almost surely, 213286188 is an apocalyptic number.

It is an amenable number.

13286188 is a deficient number, since it is larger than the sum of its proper divisors (10119684).

13286188 is a wasteful number, since it uses less digits than its factorization.

13286188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22152 (or 22150 counting only the distinct ones).

The product of its digits is 18432, while the sum is 37.

The square root of 13286188 is about 3645.0223593279. The cubic root of 13286188 is about 236.8464053731.

It can be divided in two parts, 132 and 86188, that added together give a triangular number (86320 = T415).

The spelling of 13286188 in words is "thirteen million, two hundred eighty-six thousand, one hundred eighty-eight".

Divisors: 1 2 4 151 302 604 21997 43994 87988 3321547 6643094 13286188