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91086 = 23171947
BaseRepresentation
bin10110001111001110
311121221120
4112033032
510403321
61541410
7526362
oct261716
9147846
1091086
1162486
1244866
13325c8
14252a2
151bec6
hex163ce

91086 has 32 divisors (see below), whose sum is σ = 207360. Its totient is φ = 26496.

The previous prime is 91081. The next prime is 91097. The reversal of 91086 is 68019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91081) 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, 1915 + ... + 1961.

It is an arithmetic number, because the mean of its divisors is an integer number (6480).

291086 is an apocalyptic number.

91086 is an abundant number, since it is smaller than the sum of its proper divisors (116274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103680).

91086 is a wasteful number, since it uses less digits than its factorization.

91086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 91086 is about 301.8045725300. The cubic root of 91086 is about 44.9935793308.

The spelling of 91086 in words is "ninety-one thousand, eighty-six".

Divisors: 1 2 3 6 17 19 34 38 47 51 57 94 102 114 141 282 323 646 799 893 969 1598 1786 1938 2397 2679 4794 5358 15181 30362 45543 91086