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129000704 = 28771987
BaseRepresentation
bin1111011000001…
…10010100000000
322222201220200212
413230012110000
5231011010304
620444533252
73124326230
oct754062400
9288656625
10129000704
11668aa158
1237251228
13209589a1
14131bdcc0
15b4d266e
hex7b06500

129000704 has 36 divisors (see below), whose sum is σ = 294286944. Its totient is φ = 55285248.

The previous prime is 129000689. The next prime is 129000761. The reversal of 129000704 is 407000921.

It is a self number, because there is not a number n which added to its sum of digits gives 129000704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34202 + ... + 37785.

Almost surely, 2129000704 is an apocalyptic number.

129000704 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

129000704 is an abundant number, since it is smaller than the sum of its proper divisors (165286240).

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

129000704 is an frugal number, since it uses more digits than its factorization.

129000704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72010 (or 71996 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 129000704 is about 11357.8476834302. The cubic root of 129000704 is about 505.2783538802.

The spelling of 129000704 in words is "one hundred twenty-nine million, seven hundred four", and thus it is an aban number.

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 128 224 256 448 896 1792 71987 143974 287948 503909 575896 1007818 1151792 2015636 2303584 4031272 4607168 8062544 9214336 16125088 18428672 32250176 64500352 129000704