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13282439857 = 376717330971
BaseRepresentation
bin11000101111011000…
…11111001010110001
31021021200020212002221
430113230133022301
5204200301033412
610034000441041
7650102606311
oct142754371261
937250225087
1013282439857
1156a6655725
1226a8319181
131338a61a8b
1490008b441
1552b142b07
hex317b1f2b1

13282439857 has 16 divisors (see below), whose sum is σ = 13925506752. Its totient is φ = 12656571840.

The previous prime is 13282439791. The next prime is 13282439861. The reversal of 13282439857 is 75893428231.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 13282439857 - 211 = 13282437809 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13282439867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 413382 + ... + 444352.

It is an arithmetic number, because the mean of its divisors is an integer number (870344172).

Almost surely, 213282439857 is an apocalyptic number.

It is an amenable number.

13282439857 is a deficient number, since it is larger than the sum of its proper divisors (643066895).

13282439857 is a wasteful number, since it uses less digits than its factorization.

13282439857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31248.

The product of its digits is 2903040, while the sum is 52.

The spelling of 13282439857 in words is "thirteen billion, two hundred eighty-two million, four hundred thirty-nine thousand, eight hundred fifty-seven".

Divisors: 1 37 67 173 2479 6401 11591 30971 428867 1145927 2075057 5357983 76777109 198245371 358984861 13282439857