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128570916072 = 23343352735323
BaseRepresentation
bin111011110111101101…
…1000111110011101000
3110021212022212021000110
41313233123013303220
54101303123303242
6135021544534320
712201051516624
oct1675733076350
9407768767013
10128570916072
114a587a26235
1220b021813a0
13c17cab2041
146319786184
15352767639c
hex1def6c7ce8

128570916072 has 64 divisors (see below), whose sum is σ = 329004910080. Its totient is φ = 41847244992.

The previous prime is 128570916043. The next prime is 128570916107. The reversal of 128570916072 is 270619075821.

128570916072 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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, 3622203 + ... + 3657525.

It is an arithmetic number, because the mean of its divisors is an integer number (5140701720).

Almost surely, 2128570916072 is an apocalyptic number.

128570916072 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

128570916072 is an abundant number, since it is smaller than the sum of its proper divisors (200433994008).

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

128570916072 is a wasteful number, since it uses less digits than its factorization.

128570916072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38902 (or 38898 counting only the distinct ones).

The product of its (nonzero) digits is 423360, while the sum is 48.

The spelling of 128570916072 in words is "one hundred twenty-eight billion, five hundred seventy million, nine hundred sixteen thousand, seventy-two".

Divisors: 1 2 3 4 6 8 12 24 43 86 129 172 258 344 516 1032 3527 7054 10581 14108 21162 28216 35323 42324 70646 84648 105969 141292 151661 211938 282584 303322 423876 454983 606644 847752 909966 1213288 1518889 1819932 3037778 3639864 4556667 6075556 9113334 12151112 18226668 36453336 124584221 249168442 373752663 498336884 747505326 996673768 1495010652 2990021304 5357121503 10714243006 16071364509 21428486012 32142729018 42856972024 64285458036 128570916072