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128023384886 = 2711519296427
BaseRepresentation
bin111011100111011001…
…0011101001100110110
3110020110011120210102122
41313032302131030312
54044142441304021
6134451345235542
712151352550035
oct1671662351466
9406404523378
10128023384886
114a326954a21
122098a932bb2
13c0c35274a7
1462a6b7a71c
1534e456ebab
hex1dcec9d336

128023384886 has 32 divisors (see below), whose sum is σ = 196271009280. Its totient is φ = 62614944000.

The previous prime is 128023384873. The next prime is 128023384889. The reversal of 128023384886 is 688483320821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128023384889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19916405 + ... + 19922831.

It is an arithmetic number, because the mean of its divisors is an integer number (6133469040).

Almost surely, 2128023384886 is an apocalyptic number.

128023384886 is a deficient number, since it is larger than the sum of its proper divisors (68247624394).

128023384886 is a wasteful number, since it uses less digits than its factorization.

128023384886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7580.

The product of its (nonzero) digits is 3538944, while the sum is 53.

The spelling of 128023384886 in words is "one hundred twenty-eight billion, twenty-three million, three hundred eighty-four thousand, eight hundred eighty-six".

Divisors: 1 2 71 142 151 302 929 1858 6427 10721 12854 21442 65959 131918 140279 280558 456317 912634 970477 1940954 5970683 9959809 11941366 19919618 68903867 137807734 423918493 847836986 901573133 1803146266 64011692443 128023384886