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128263034 = 21915721499
BaseRepresentation
bin1111010010100…
…10001101111010
322221100102210202
413221102031322
5230313404114
620421042202
73115134464
oct751221572
9287312722
10128263034
1166445a09
1236b56362
132075acb3
141306b134
15b3d8cde
hex7a5237a

128263034 has 16 divisors (see below), whose sum is σ = 203820000. Its totient is φ = 60366384.

The previous prime is 128263013. The next prime is 128263043. The reversal of 128263034 is 430362821.

It is a junction number, because it is equal to n+sod(n) for n = 128262988 and 128263006.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4784 + ... + 16715.

It is an arithmetic number, because the mean of its divisors is an integer number (12738750).

Almost surely, 2128263034 is an apocalyptic number.

128263034 is a deficient number, since it is larger than the sum of its proper divisors (75556966).

128263034 is a wasteful number, since it uses less digits than its factorization.

128263034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21677.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 128263034 is about 11325.3271034439. The cubic root of 128263034 is about 504.3133942569.

The spelling of 128263034 in words is "one hundred twenty-eight million, two hundred sixty-three thousand, thirty-four".

Divisors: 1 2 19 38 157 314 2983 5966 21499 42998 408481 816962 3375343 6750686 64131517 128263034