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13628055 = 3571071213
BaseRepresentation
bin110011111111…
…001010010111
3221122101011210
4303333022113
511442044210
61204032503
7223556640
oct63771227
927571153
1013628055
117768a61
124692733
132a9204c
141b4a6c7
1512e2e20
hexcff297

13628055 has 32 divisors (see below), whose sum is σ = 25173504. Its totient is φ = 6166656.

The previous prime is 13628039. The next prime is 13628059. The reversal of 13628055 is 55082631.

13628055 = T626 + T627 + ... + T688.

It is not a de Polignac number, because 13628055 - 24 = 13628039 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13628059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10629 + ... + 11841.

It is an arithmetic number, because the mean of its divisors is an integer number (786672).

Almost surely, 213628055 is an apocalyptic number.

13628055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

13628055 is a deficient number, since it is larger than the sum of its proper divisors (11545449).

13628055 is a wasteful number, since it uses less digits than its factorization.

13628055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1335.

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 13628055 is about 3691.6195632811. The cubic root of 13628055 is about 238.8606588439.

The spelling of 13628055 in words is "thirteen million, six hundred twenty-eight thousand, fifty-five".

Divisors: 1 3 5 7 15 21 35 105 107 321 535 749 1213 1605 2247 3639 3745 6065 8491 11235 18195 25473 42455 127365 129791 389373 648955 908537 1946865 2725611 4542685 13628055