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13808450 = 252277997
BaseRepresentation
bin110100101011…
…001101000010
3221222112122002
4310223031002
512013332300
61211544002
7225240605
oct64531502
927875562
1013808450
117881547
12475b002
132b261a6
141b9633c
15132b5d5
hexd2b342

13808450 has 24 divisors (see below), whose sum is σ = 25802292. Its totient is φ = 5497920.

The previous prime is 13808449. The next prime is 13808453. The reversal of 13808450 is 5480831.

It can be written as a sum of positive squares in 6 ways, for example, as 5276209 + 8532241 = 2297^2 + 2921^2 .

It is not an unprimeable number, because it can be changed into a prime (13808453) 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, 13352 + ... + 14348.

Almost surely, 213808450 is an apocalyptic number.

13808450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13808450 is a deficient number, since it is larger than the sum of its proper divisors (11993842).

13808450 is a wasteful number, since it uses less digits than its factorization.

13808450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286 (or 1281 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 13808450 is about 3715.9722819203. The cubic root of 13808450 is about 239.9099778117.

The spelling of 13808450 in words is "thirteen million, eight hundred eight thousand, four hundred fifty".

Divisors: 1 2 5 10 25 50 277 554 997 1385 1994 2770 4985 6925 9970 13850 24925 49850 276169 552338 1380845 2761690 6904225 13808450