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128295069 = 376109289
BaseRepresentation
bin1111010010110…
…10000010011101
322221102001202020
413221122002131
5230320420234
620421450353
73115330050
oct751320235
9287361666
10128295069
1166467a91
1236b709b9
132076c756
1413078a97
15b3e3549
hex7a5a09d

128295069 has 8 divisors (see below), whose sum is σ = 195497280. Its totient is φ = 73311456.

The previous prime is 128295053. The next prime is 128295077. The reversal of 128295069 is 960592821.

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

It is not a de Polignac number, because 128295069 - 24 = 128295053 is a prime.

It is a super-2 number, since 2×1282950692 = 32919249459429522, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128295069.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128295029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3054624 + ... + 3054665.

It is an arithmetic number, because the mean of its divisors is an integer number (24437160).

Almost surely, 2128295069 is an apocalyptic number.

It is an amenable number.

128295069 is a deficient number, since it is larger than the sum of its proper divisors (67202211).

128295069 is an equidigital number, since it uses as much as digits as its factorization.

128295069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6109299.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 128295069 is about 11326.7413230814. The cubic root of 128295069 is about 504.3553765653.

The spelling of 128295069 in words is "one hundred twenty-eight million, two hundred ninety-five thousand, sixty-nine".

Divisors: 1 3 7 21 6109289 18327867 42765023 128295069