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129053088 = 253449789
BaseRepresentation
bin1111011000100…
…11000110100000
322222211120120000
413230103012200
5231014144323
620450020000
73124635033
oct754230640
9288746500
10129053088
116693554a
1237277600
1320976798
14131d501a
15b4e2e43
hex7b131a0

129053088 has 60 divisors (see below), whose sum is σ = 379549170. Its totient is φ = 43016832.

The previous prime is 129053087. The next prime is 129053101. The reversal of 129053088 is 880350921.

It can be written as a sum of positive squares in only one way, i.e., 122146704 + 6906384 = 11052^2 + 2628^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (129053081) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 22303 + ... + 27486.

Almost surely, 2129053088 is an apocalyptic number.

129053088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

129053088 is an abundant number, since it is smaller than the sum of its proper divisors (250496082).

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

129053088 is an equidigital number, since it uses as much as digits as its factorization.

129053088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49811 (or 49794 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 129053088 is about 11360.1535200894. The cubic root of 129053088 is about 505.3467383116.

The spelling of 129053088 in words is "one hundred twenty-nine million, fifty-three thousand, eighty-eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 72 81 96 108 144 162 216 288 324 432 648 864 1296 2592 49789 99578 149367 199156 298734 398312 448101 597468 796624 896202 1194936 1344303 1593248 1792404 2389872 2688606 3584808 4032909 4779744 5377212 7169616 8065818 10754424 14339232 16131636 21508848 32263272 43017696 64526544 129053088