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13439307 = 371075981
BaseRepresentation
bin110011010001…
…000101001011
3221021210021010
4303101011023
511420024212
61200015003
7222142440
oct63210513
927253233
1013439307
11764a172
124601463
132a2716b
141adb9c7
1512a703c
hexcd114b

13439307 has 16 divisors (see below), whose sum is σ = 20673792. Its totient is φ = 7606560.

The previous prime is 13439297. The next prime is 13439311. The reversal of 13439307 is 70393431.

13439307 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13439307 - 212 = 13435211 is a prime.

It is a super-2 number, since 2×134393072 = 361229945280498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (13439317) 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 15 ways as a sum of consecutive naturals, for example, 744 + ... + 5237.

It is an arithmetic number, because the mean of its divisors is an integer number (1292112).

Almost surely, 213439307 is an apocalyptic number.

13439307 is a deficient number, since it is larger than the sum of its proper divisors (7234485).

13439307 is a wasteful number, since it uses less digits than its factorization.

13439307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6098.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 13439307 is about 3665.9660391226. The cubic root of 13439307 is about 237.7527915939.

The spelling of 13439307 in words is "thirteen million, four hundred thirty-nine thousand, three hundred seven".

Divisors: 1 3 7 21 107 321 749 2247 5981 17943 41867 125601 639967 1919901 4479769 13439307