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128805097304 = 23131379040223
BaseRepresentation
bin111011111110101100…
…0011100111101011000
3110022110122111220021102
41313331120130331120
54102243101103204
6135101112130532
712206624156012
oct1677530347530
9408418456242
10128805097304
114a698135044
1220b68696a48
13c1b9476510
14633c9051b2
15353ced341e
hex1dfd61cf58

128805097304 has 32 divisors (see below), whose sum is σ = 261985691520. Its totient is φ = 59014569216.

The previous prime is 128805097273. The next prime is 128805097321. The reversal of 128805097304 is 403790508821.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4505864 + ... + 4534359.

It is an arithmetic number, because the mean of its divisors is an integer number (8187052860).

Almost surely, 2128805097304 is an apocalyptic number.

It is an amenable number.

128805097304 is an abundant number, since it is smaller than the sum of its proper divisors (133180594216).

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

128805097304 is a wasteful number, since it uses less digits than its factorization.

128805097304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9040379 (or 9040375 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 47.

The spelling of 128805097304 in words is "one hundred twenty-eight billion, eight hundred five million, ninety-seven thousand, three hundred four".

Divisors: 1 2 4 8 13 26 52 104 137 274 548 1096 1781 3562 7124 14248 9040223 18080446 36160892 72321784 117522899 235045798 470091596 940183192 1238510551 2477021102 4954042204 9908084408 16100637163 32201274326 64402548652 128805097304