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26664160 = 255179803
BaseRepresentation
bin110010110110…
…1110011100000
31212011200100111
41211231303200
523311223120
62351301104
7442433035
oct145556340
955150314
1026664160
11140621a6
128b1a794
1356a7813
14378138c
15251a75a
hex196dce0

26664160 has 48 divisors (see below), whose sum is σ = 66706416. Its totient is φ = 10037248.

The previous prime is 26664151. The next prime is 26664193. The reversal of 26664160 is 6146662.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 2182 + ... + 7621.

It is an arithmetic number, because the mean of its divisors is an integer number (1389717).

Almost surely, 226664160 is an apocalyptic number.

26664160 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26664160 is an abundant number, since it is smaller than the sum of its proper divisors (40042256).

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

26664160 is a wasteful number, since it uses less digits than its factorization.

26664160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9835 (or 9827 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 26664160 is about 5163.7350822830. The cubic root of 26664160 is about 298.7509549872.

The spelling of 26664160 in words is "twenty-six million, six hundred sixty-four thousand, one hundred sixty".

Divisors: 1 2 4 5 8 10 16 17 20 32 34 40 68 80 85 136 160 170 272 340 544 680 1360 2720 9803 19606 39212 49015 78424 98030 156848 166651 196060 313696 333302 392120 666604 784240 833255 1333208 1568480 1666510 2666416 3333020 5332832 6666040 13332080 26664160