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129283 = 7112373
BaseRepresentation
bin11111100100000011
320120100021
4133210003
513114113
62434311
71045630
oct374403
9216307
10129283
1189150
1262997
1346acb
1435187
152848d
hex1f903

129283 has 16 divisors (see below), whose sum is σ = 170496. Its totient is φ = 95040.

The previous prime is 129281. The next prime is 129287. The reversal of 129283 is 382921.

It is not a de Polignac number, because 129283 - 21 = 129281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129281) 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, 1735 + ... + 1807.

It is an arithmetic number, because the mean of its divisors is an integer number (10656).

129283 is a Friedman number, since it can be written as (2^8-3)*(2^9-1), using all its digits and the basic arithmetic operations.

2129283 is an apocalyptic number.

129283 is a deficient number, since it is larger than the sum of its proper divisors (41213).

129283 is a wasteful number, since it uses less digits than its factorization.

129283 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114.

The product of its digits is 864, while the sum is 25.

The square root of 129283 is about 359.5594526640. The cubic root of 129283 is about 50.5646657137.

The spelling of 129283 in words is "one hundred twenty-nine thousand, two hundred eighty-three".

Divisors: 1 7 11 23 73 77 161 253 511 803 1679 1771 5621 11753 18469 129283