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13420206 = 232745567
BaseRepresentation
bin110011001100…
…011010101110
3221020211001200
4303030122232
511413421311
61155350330
7222032652
oct63143256
927224050
1013420206
117636888
1245b23a6
132a1b567
141ad4a62
1512a1556
hexccc6ae

13420206 has 12 divisors (see below), whose sum is σ = 29077152. Its totient is φ = 4473396.

The previous prime is 13420193. The next prime is 13420223. The reversal of 13420206 is 60202431.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 745567 = 13420206 / (1 + 3 + 4 + 2 + 0 + 2 + 0 + 6).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 372766 + ... + 372801.

It is an arithmetic number, because the mean of its divisors is an integer number (2423096).

Almost surely, 213420206 is an apocalyptic number.

13420206 is an abundant number, since it is smaller than the sum of its proper divisors (15656946).

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

13420206 is a wasteful number, since it uses less digits than its factorization.

13420206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 745575 (or 745572 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 13420206 is about 3663.3599331761. The cubic root of 13420206 is about 237.6401005337.

Adding to 13420206 its reverse (60202431), we get a palindrome (73622637).

The spelling of 13420206 in words is "thirteen million, four hundred twenty thousand, two hundred six".

Divisors: 1 2 3 6 9 18 745567 1491134 2236701 4473402 6710103 13420206