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13420207 = 71189017
BaseRepresentation
bin110011001100…
…011010101111
3221020211001201
4303030122233
511413421312
61155350331
7222032653
oct63143257
927224051
1013420207
117636889
1245b23a7
132a1b568
141ad4a63
1512a1557
hexccc6af

13420207 has 4 divisors (see below), whose sum is σ = 13609296. Its totient is φ = 13231120.

The previous prime is 13420193. The next prime is 13420223. The reversal of 13420207 is 70202431.

13420207 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13420207 - 211 = 13418159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13420237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 94438 + ... + 94579.

It is an arithmetic number, because the mean of its divisors is an integer number (3402324).

Almost surely, 213420207 is an apocalyptic number.

13420207 is a deficient number, since it is larger than the sum of its proper divisors (189089).

13420207 is an equidigital number, since it uses as much as digits as its factorization.

13420207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189088.

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 13420207 is about 3663.3600696628. The cubic root of 13420207 is about 237.6401064362.

Adding to 13420207 its reverse (70202431), we get a palindrome (83622638).

The spelling of 13420207 in words is "thirteen million, four hundred twenty thousand, two hundred seven".

Divisors: 1 71 189017 13420207