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129441306 = 23313891789
BaseRepresentation
bin1111011011100…
…01111000011010
3100000120022002110
413231301320122
5231114110211
620502213150
73131142621
oct755617032
9300508073
10129441306
1167080195
12374241b6
1320a813b7
14132966b8
15b56cea6
hex7b71e1a

129441306 has 32 divisors (see below), whose sum is σ = 268070400. Its totient is φ = 41624640.

The previous prime is 129441289. The next prime is 129441313. The reversal of 129441306 is 603144921.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71460 + ... + 73248.

It is an arithmetic number, because the mean of its divisors is an integer number (8377200).

Almost surely, 2129441306 is an apocalyptic number.

129441306 is an abundant number, since it is smaller than the sum of its proper divisors (138629094).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129441306 is a wasteful number, since it uses less digits than its factorization.

129441306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2214.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 129441306 is about 11377.2275181610. The cubic root of 129441306 is about 505.8529597176.

The spelling of 129441306 in words is "one hundred twenty-nine million, four hundred forty-one thousand, three hundred six".

Divisors: 1 2 3 6 31 62 93 186 389 778 1167 1789 2334 3578 5367 10734 12059 24118 36177 55459 72354 110918 166377 332754 695921 1391842 2087763 4175526 21573551 43147102 64720653 129441306