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860090 = 257111117
BaseRepresentation
bin11010001111110111010
31121200211012
43101332322
5210010330
630233522
710211360
oct3217672
91550735
10860090
11538220
123558a2
1324163a
14185630
1511ec95
hexd1fba

860090 has 32 divisors (see below), whose sum is σ = 1931904. Its totient is φ = 267840.

The previous prime is 860089. The next prime is 860107. The reversal of 860090 is 90068.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 860090.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 212 + ... + 1328.

It is an arithmetic number, because the mean of its divisors is an integer number (60372).

2860090 is an apocalyptic number.

860090 is an abundant number, since it is smaller than the sum of its proper divisors (1071814).

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

860090 is a wasteful number, since it uses less digits than its factorization.

860090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1142.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 860090 is about 927.4103730280. The cubic root of 860090 is about 95.1001713470.

The spelling of 860090 in words is "eight hundred sixty thousand, ninety".

Divisors: 1 2 5 7 10 11 14 22 35 55 70 77 110 154 385 770 1117 2234 5585 7819 11170 12287 15638 24574 39095 61435 78190 86009 122870 172018 430045 860090