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13983207 = 374491483
BaseRepresentation
bin110101010101…
…110111100111
3222022102100120
4311111313213
512034430312
61215413023
7226566240
oct65256747
928272316
1013983207
117990877
124824173
132b878b4
141bddcc7
15136328c
hexd55de7

13983207 has 16 divisors (see below), whose sum is σ = 21369600. Its totient is φ = 7967232.

The previous prime is 13983169. The next prime is 13983209. The reversal of 13983207 is 70238931.

It is not a de Polignac number, because 13983207 - 28 = 13982951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13983209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8688 + ... + 10170.

It is an arithmetic number, because the mean of its divisors is an integer number (1335600).

Almost surely, 213983207 is an apocalyptic number.

13983207 is a deficient number, since it is larger than the sum of its proper divisors (7386393).

13983207 is a wasteful number, since it uses less digits than its factorization.

13983207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1942.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 13983207 is about 3739.4126544151. The cubic root of 13983207 is about 240.9178223401.

The spelling of 13983207 in words is "thirteen million, nine hundred eighty-three thousand, two hundred seven".

Divisors: 1 3 7 21 449 1347 1483 3143 4449 9429 10381 31143 665867 1997601 4661069 13983207