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26860 = 2251779
BaseRepresentation
bin110100011101100
31100211211
412203230
51324420
6324204
7141211
oct64354
940754
1026860
11191a9
1213664
13c2c2
149b08
157e5a
hex68ec

26860 has 24 divisors (see below), whose sum is σ = 60480. Its totient is φ = 9984.

The previous prime is 26849. The next prime is 26861. The reversal of 26860 is 6862.

26860 is an undulating number in base 13.

It is not an unprimeable number, because it can be changed into a prime (26861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301 + ... + 379.

It is an arithmetic number, because the mean of its divisors is an integer number (2520).

226860 is an apocalyptic number.

26860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30240).

26860 is an abundant number, since it is smaller than the sum of its proper divisors (33620).

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

26860 is a wasteful number, since it uses less digits than its factorization.

26860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 26860 is about 163.8902071510. The cubic root of 26860 is about 29.9480582686.

The spelling of 26860 in words is "twenty-six thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 17 20 34 68 79 85 158 170 316 340 395 790 1343 1580 2686 5372 6715 13430 26860