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13628188 = 227486721
BaseRepresentation
bin110011111111…
…001100011100
3221122101100201
4303333030130
511442100223
61204033244
7223560220
oct63771434
927571321
1013628188
117769072
124692824
132a92122
141b4a780
1512e2ead
hexcff31c

13628188 has 12 divisors (see below), whose sum is σ = 27256432. Its totient is φ = 5840640.

The previous prime is 13628183. The next prime is 13628201. The reversal of 13628188 is 88182631.

13628188 is an admirable number.

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 a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13628183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 243333 + ... + 243388.

Almost surely, 213628188 is an apocalyptic number.

It is an amenable number.

13628188 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

13628188 is a wasteful number, since it uses less digits than its factorization.

13628188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486732 (or 486730 counting only the distinct ones).

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

The square root of 13628188 is about 3691.6375770110. The cubic root of 13628188 is about 238.8614358773.

The spelling of 13628188 in words is "thirteen million, six hundred twenty-eight thousand, one hundred eighty-eight".

Divisors: 1 2 4 7 14 28 486721 973442 1946884 3407047 6814094 13628188