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86280189 = 337857907
BaseRepresentation
bin1010010010010…
…00011111111101
320000100111011120
411021020133331
5134041431224
612321141153
72065240512
oct511103775
9200314146
1086280189
1144780646
1224a8a7b9
1314b4ba88
14b65d309
157894779
hex52487fd

86280189 has 16 divisors (see below), whose sum is σ = 118417728. Its totient is φ = 55838592.

The previous prime is 86280163. The next prime is 86280193. The reversal of 86280189 is 98108268.

It is not a de Polignac number, because 86280189 - 25 = 86280157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 86280189.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86280119) 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, 94674 + ... + 95580.

It is an arithmetic number, because the mean of its divisors is an integer number (7401108).

Almost surely, 286280189 is an apocalyptic number.

It is an amenable number.

86280189 is a deficient number, since it is larger than the sum of its proper divisors (32137539).

86280189 is a wasteful number, since it uses less digits than its factorization.

86280189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804.

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 86280189 is about 9288.7129894297. The cubic root of 86280189 is about 441.8793392445.

The spelling of 86280189 in words is "eighty-six million, two hundred eighty thousand, one hundred eighty-nine".

Divisors: 1 3 37 111 857 907 2571 2721 31709 33559 95127 100677 777299 2331897 28760063 86280189