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13788203 = 111327417
BaseRepresentation
bin110100100110…
…010000101011
3221221111212012
4310212100223
512012210303
61211310135
7225124562
oct64462053
927844765
1013788203
117868310
12474b34b
132b19c00
141b8cbd9
1513255d8
hexd2642b

13788203 has 12 divisors (see below), whose sum is σ = 16289928. Its totient is φ = 11568960.

The previous prime is 13788199. The next prime is 13788221. The reversal of 13788203 is 30288731.

It is not a de Polignac number, because 13788203 - 22 = 13788199 is a prime.

It is a super-2 number, since 2×137882032 = 380229083938418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13788203.

It is not an unprimeable number, because it can be changed into a prime (13788233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1850 + ... + 5567.

It is an arithmetic number, because the mean of its divisors is an integer number (1357494).

Almost surely, 213788203 is an apocalyptic number.

13788203 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

13788203 is a deficient number, since it is larger than the sum of its proper divisors (2501725).

13788203 is a wasteful number, since it uses less digits than its factorization.

13788203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7454 (or 7441 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 13788203 is about 3713.2469618920. The cubic root of 13788203 is about 239.7926623664.

The spelling of 13788203 in words is "thirteen million, seven hundred eighty-eight thousand, two hundred three".

Divisors: 1 11 13 143 169 1859 7417 81587 96421 1060631 1253473 13788203