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128064130 = 2512806413
BaseRepresentation
bin1111010001000…
…01101010000010
322220222022221221
413220201222002
5230241023010
620412505254
73113345545
oct750415202
9286868857
10128064130
116631a527
1236a7b22a
13206bb5bc
141301885c
15b399dda
hex7a21a82

128064130 has 8 divisors (see below), whose sum is σ = 230515452. Its totient is φ = 51225648.

The previous prime is 128064113. The next prime is 128064149. The reversal of 128064130 is 31460821.

It can be written as a sum of positive squares in 2 ways, for example, as 110061081 + 18003049 = 10491^2 + 4243^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 128064095 and 128064104.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6403197 + ... + 6403216.

Almost surely, 2128064130 is an apocalyptic number.

128064130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

128064130 is a deficient number, since it is larger than the sum of its proper divisors (102451322).

128064130 is a wasteful number, since it uses less digits than its factorization.

128064130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12806420.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 128064130 is about 11316.5423164498. The cubic root of 128064130 is about 504.0525712568.

The spelling of 128064130 in words is "one hundred twenty-eight million, sixty-four thousand, one hundred thirty".

Divisors: 1 2 5 10 12806413 25612826 64032065 128064130