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128015202938 = 273223836821
BaseRepresentation
bin111011100111001001…
…1001111101001111010
3110020102121012002220112
41313032103033221322
54044133342443223
6134450454024322
712151223162000
oct1671623175172
9406377162815
10128015202938
114a322276787
12209880480a2
13c0c19212bc
1462a5a4aa70
1534e39a5778
hex1dce4cfa7a

128015202938 has 32 divisors (see below), whose sum is σ = 224937753600. Its totient is φ = 54617567760.

The previous prime is 128015202929. The next prime is 128015202961. The reversal of 128015202938 is 839202510821.

128015202938 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 128015202895 and 128015202904.

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 15 ways as a sum of consecutive naturals, for example, 265433 + ... + 571388.

It is an arithmetic number, because the mean of its divisors is an integer number (7029304800).

Almost surely, 2128015202938 is an apocalyptic number.

128015202938 is a deficient number, since it is larger than the sum of its proper divisors (96922550662).

128015202938 is an equidigital number, since it uses as much as digits as its factorization.

128015202938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 837067 (or 837053 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 41.

The spelling of 128015202938 in words is "one hundred twenty-eight billion, fifteen million, two hundred two thousand, nine hundred thirty-eight".

Divisors: 1 2 7 14 49 98 223 343 446 686 1561 3122 10927 21854 76489 152978 836821 1673642 5857747 11715494 41004229 82008458 186611083 287029603 373222166 574059206 1306277581 2612555162 9143943067 18287886134 64007601469 128015202938