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128044253470 = 25721736594201
BaseRepresentation
bin111011101000000001…
…0000100000100011110
3110020111121212000202011
41313100002010010132
54044213312102340
6134453412421434
712152025124300
oct1672002040436
9406447760664
10128044253470
114a337708891
122099591787a
13c0c7953073
1462a984d970
1534e62e30ea
hex1dd008411e

128044253470 has 96 divisors (see below), whose sum is σ = 284025281760. Its totient is φ = 41297356800.

The previous prime is 128044253461. The next prime is 128044253473. The reversal of 128044253470 is 74352440821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128044253473) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30477370 + ... + 30481570.

It is an arithmetic number, because the mean of its divisors is an integer number (2958596685).

Almost surely, 2128044253470 is an apocalyptic number.

128044253470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128044253470 is an abundant number, since it is smaller than the sum of its proper divisors (155981028290).

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

128044253470 is a wasteful number, since it uses less digits than its factorization.

128044253470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7898 (or 7891 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

The spelling of 128044253470 in words is "one hundred twenty-eight billion, forty-four million, two hundred fifty-three thousand, four hundred seventy".

Divisors: 1 2 5 7 10 14 17 34 35 49 70 85 98 119 170 238 245 490 595 833 1190 1666 3659 4165 4201 7318 8330 8402 18295 21005 25613 29407 36590 42010 51226 58814 62203 71417 124406 128065 142834 147035 179291 205849 256130 294070 311015 357085 358582 411698 435421 499919 622030 714170 870842 896455 999838 1029245 1792910 2058490 2177105 2499595 3047947 3499433 4354210 4999190 6095894 6998866 15239735 15371459 17497165 30479470 30742918 34994330 76857295 107600213 153714590 215200426 261314803 522629606 538001065 753201491 1076002130 1306574015 1506402982 1829203621 2613148030 3658407242 3766007455 7532014910 9146018105 12804425347 18292036210 25608850694 64022126735 128044253470