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286389061 = 7238117183
BaseRepresentation
bin10001000100011…
…111001101000101
3201221220001221021
4101010133031011
51041303422221
644230151141
710045160350
oct2104371505
9657801837
10286389061
11137728382
127bab24b1
13474437aa
142a06d297
151a221041
hex1111f345

286389061 has 8 divisors (see below), whose sum is σ = 327458304. Its totient is φ = 245358960.

The previous prime is 286389049. The next prime is 286389091. The reversal of 286389061 is 160983682.

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

It is not a de Polignac number, because 286389061 - 29 = 286388549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 286388999 and 286389017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (286389091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8076 + ... + 25258.

It is an arithmetic number, because the mean of its divisors is an integer number (40932288).

Almost surely, 2286389061 is an apocalyptic number.

It is an amenable number.

286389061 is a deficient number, since it is larger than the sum of its proper divisors (41069243).

286389061 is a wasteful number, since it uses less digits than its factorization.

286389061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19571.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 286389061 is about 16923.0334455735. The cubic root of 286389061 is about 659.1518497702.

The spelling of 286389061 in words is "two hundred eighty-six million, three hundred eighty-nine thousand, sixty-one".

Divisors: 1 7 2381 16667 17183 120281 40912723 286389061