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13387339 = 72475813
BaseRepresentation
bin110011000100…
…011001001011
3221012010222101
4303010121023
511411343324
61154534231
7221535100
oct63043113
927163871
1013387339
117614119
124597377
132a09604
141ac6aa7
151296944
hexcc464b

13387339 has 12 divisors (see below), whose sum is σ = 15907104. Its totient is φ = 11228784.

The previous prime is 13387333. The next prime is 13387351. The reversal of 13387339 is 93378331.

It is not a de Polignac number, because 13387339 - 23 = 13387331 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13387298 and 13387307.

It is not an unprimeable number, because it can be changed into a prime (13387331) 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 11 ways as a sum of consecutive naturals, for example, 604 + ... + 5209.

It is an arithmetic number, because the mean of its divisors is an integer number (1325592).

Almost surely, 213387339 is an apocalyptic number.

13387339 is a deficient number, since it is larger than the sum of its proper divisors (2519765).

13387339 is an equidigital number, since it uses as much as digits as its factorization.

13387339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5874 (or 5867 counting only the distinct ones).

The product of its digits is 40824, while the sum is 37.

The square root of 13387339 is about 3658.8712740407. The cubic root of 13387339 is about 237.4459430064.

The spelling of 13387339 in words is "thirteen million, three hundred eighty-seven thousand, three hundred thirty-nine".

Divisors: 1 7 47 49 329 2303 5813 40691 273211 284837 1912477 13387339