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128648795 = 5112519319
BaseRepresentation
bin1111010101100…
…00011001011011
322222002000222012
413222300121123
5230413230140
620433220135
73121332242
oct752603133
9288060865
10128648795
1166689820
123710164b
1320864762
141312b959
15b463265
hex7ab065b

128648795 has 16 divisors (see below), whose sum is σ = 169102080. Its totient is φ = 93180000.

The previous prime is 128648771. The next prime is 128648797. The reversal of 128648795 is 597846821.

It is not a de Polignac number, because 128648795 - 28 = 128648539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128648797) 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, 9146 + ... + 18464.

It is an arithmetic number, because the mean of its divisors is an integer number (10568880).

Almost surely, 2128648795 is an apocalyptic number.

128648795 is a deficient number, since it is larger than the sum of its proper divisors (40453285).

128648795 is a wasteful number, since it uses less digits than its factorization.

128648795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9586.

The product of its digits is 967680, while the sum is 50.

The square root of 128648795 is about 11342.3452160477. The cubic root of 128648795 is about 504.8184754239.

The spelling of 128648795 in words is "one hundred twenty-eight million, six hundred forty-eight thousand, seven hundred ninety-five".

Divisors: 1 5 11 55 251 1255 2761 9319 13805 46595 102509 512545 2339069 11695345 25729759 128648795