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12320180 = 2252326783
BaseRepresentation
bin101110111111…
…110110110100
3212011221002222
4232333312310
511123221210
61120021512
7206501615
oct56776664
925157088
1012320180
116a55374
124161898
132724962
1418c9c0c
151135655
hexbbfdb4

12320180 has 24 divisors (see below), whose sum is σ = 26998272. Its totient is φ = 4713632.

The previous prime is 12320179. The next prime is 12320197. The reversal of 12320180 is 8102321.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12932 + ... + 13851.

It is an arithmetic number, because the mean of its divisors is an integer number (1124928).

Almost surely, 212320180 is an apocalyptic number.

12320180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12320180 is an abundant number, since it is smaller than the sum of its proper divisors (14678092).

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

12320180 is a wasteful number, since it uses less digits than its factorization.

12320180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26815 (or 26813 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 12320180 is about 3510.0113959929. The cubic root of 12320180 is about 230.9611948584.

The spelling of 12320180 in words is "twelve million, three hundred twenty thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 23 46 92 115 230 460 26783 53566 107132 133915 267830 535660 616009 1232018 2464036 3080045 6160090 12320180