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13420208 = 241749339
BaseRepresentation
bin110011001100…
…011010110000
3221020211001202
4303030122300
511413421313
61155350332
7222032654
oct63143260
927224052
1013420208
11763688a
1245b23a8
132a1b569
141ad4a64
1512a1558
hexccc6b0

13420208 has 20 divisors (see below), whose sum is σ = 27531720. Its totient is φ = 6315264.

The previous prime is 13420193. The next prime is 13420223. The reversal of 13420208 is 80202431.

It is an interprime number because it is at equal distance from previous prime (13420193) and next prime (13420223).

It is a self number, because there is not a number n which added to its sum of digits gives 13420208.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24398 + ... + 24941.

It is an arithmetic number, because the mean of its divisors is an integer number (1376586).

Almost surely, 213420208 is an apocalyptic number.

It is an amenable number.

13420208 is an abundant number, since it is smaller than the sum of its proper divisors (14111512).

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

13420208 is a wasteful number, since it uses less digits than its factorization.

13420208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49364 (or 49358 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 13420208 is about 3663.3602061495. The cubic root of 13420208 is about 237.6401123388.

Adding to 13420208 its reverse (80202431), we get a palindrome (93622639).

The spelling of 13420208 in words is "thirteen million, four hundred twenty thousand, two hundred eight".

Divisors: 1 2 4 8 16 17 34 68 136 272 49339 98678 197356 394712 789424 838763 1677526 3355052 6710104 13420208