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8253289 = 11268209
BaseRepresentation
bin11111011110111101101001
3120112022101101
4133132331221
54103101124
6452521401
7130103032
oct37367551
916468341
108253289
114727900
122920261
13192c805
14114ba89
15ad0644
hex7def69

8253289 has 6 divisors (see below), whose sum is σ = 9071930. Its totient is φ = 7502880.

The previous prime is 8253281. The next prime is 8253293. The reversal of 8253289 is 9823528.

It can be written as a sum of positive squares in only one way, i.e., 6969600 + 1283689 = 2640^2 + 1133^2 .

It is not a de Polignac number, because 8253289 - 23 = 8253281 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8253281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33984 + ... + 34225.

Almost surely, 28253289 is an apocalyptic number.

It is an amenable number.

8253289 is a deficient number, since it is larger than the sum of its proper divisors (818641).

8253289 is a wasteful number, since it uses less digits than its factorization.

8253289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68231 (or 68220 counting only the distinct ones).

The product of its digits is 34560, while the sum is 37.

The square root of 8253289 is about 2872.8538076275. The cubic root of 8253289 is about 202.0888492584.

It can be divided in two parts, 82532 and 89, that added together give a triangular number (82621 = T406).

The spelling of 8253289 in words is "eight million, two hundred fifty-three thousand, two hundred eighty-nine".

Divisors: 1 11 121 68209 750299 8253289