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129679341 = 31116723531
BaseRepresentation
bin1111011101010…
…11111111101101
3100001000101121120
413232223333231
5231144214331
620511251153
73133153611
oct756537755
9301011546
10129679341
1167223010
1237519ab9
1320b3584c
1413319341
15b5b8796
hex7babfed

129679341 has 16 divisors (see below), whose sum is σ = 189762048. Its totient is φ = 78119600.

The previous prime is 129679337. The next prime is 129679379. The reversal of 129679341 is 143976921.

It is a cyclic number.

It is not a de Polignac number, because 129679341 - 22 = 129679337 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 129679293 and 129679302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129679391) 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, 6255 + ... + 17276.

It is an arithmetic number, because the mean of its divisors is an integer number (11860128).

Almost surely, 2129679341 is an apocalyptic number.

129679341 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

129679341 is a deficient number, since it is larger than the sum of its proper divisors (60082707).

129679341 is a wasteful number, since it uses less digits than its factorization.

129679341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23712.

The product of its digits is 81648, while the sum is 42.

The square root of 129679341 is about 11387.6837416570. The cubic root of 129679341 is about 506.1628478537.

The spelling of 129679341 in words is "one hundred twenty-nine million, six hundred seventy-nine thousand, three hundred forty-one".

Divisors: 1 3 11 33 167 501 1837 5511 23531 70593 258841 776523 3929677 11789031 43226447 129679341