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128284033 is a prime number
BaseRepresentation
bin1111010010101…
…11010110000001
322221101111121111
413221113112001
5230320042113
620421323321
73115252633
oct751272601
9287344544
10128284033
116645a769
1236b66541
1320767717
1413074a53
15b3e013d
hex7a57581

128284033 has 2 divisors, whose sum is σ = 128284034. Its totient is φ = 128284032.

The previous prime is 128284027. The next prime is 128284043. The reversal of 128284033 is 330482821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 114318864 + 13965169 = 10692^2 + 3737^2 .

It is a cyclic number.

It is not a de Polignac number, because 128284033 - 25 = 128284001 is a prime.

It is a super-3 number, since 3×1282840333 (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 128283986 and 128284004.

It is not a weakly prime, because it can be changed into another prime (128284003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64142016 + 64142017.

It is an arithmetic number, because the mean of its divisors is an integer number (64142017).

Almost surely, 2128284033 is an apocalyptic number.

It is an amenable number.

128284033 is a deficient number, since it is larger than the sum of its proper divisors (1).

128284033 is an equidigital number, since it uses as much as digits as its factorization.

128284033 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 128284033 is about 11326.2541468925. The cubic root of 128284033 is about 504.3409145246.

It can be divided in two parts, 12828 and 4033, that added together give a palindrome (16861).

The spelling of 128284033 in words is "one hundred twenty-eight million, two hundred eighty-four thousand, thirty-three".