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12081284 = 2229104149
BaseRepresentation
bin101110000101…
…100010000100
3211201210101222
4232011202010
511043100114
61110535512
7204455255
oct56054204
924653358
1012081284
116901936
124067598
13266ccb7
141866b2c
1510d998e
hexb85884

12081284 has 12 divisors (see below), whose sum is σ = 21871500. Its totient is φ = 5832288.

The previous prime is 12081259. The next prime is 12081287. The reversal of 12081284 is 48218021.

It can be written as a sum of positive squares in 2 ways, for example, as 8761600 + 3319684 = 2960^2 + 1822^2 .

It is not an unprimeable number, because it can be changed into a prime (12081287) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51959 + ... + 52190.

It is an arithmetic number, because the mean of its divisors is an integer number (1822625).

Almost surely, 212081284 is an apocalyptic number.

It is an amenable number.

12081284 is a deficient number, since it is larger than the sum of its proper divisors (9790216).

12081284 is a wasteful number, since it uses less digits than its factorization.

12081284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104182 (or 104180 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 12081284 is about 3475.8141492318. The cubic root of 12081284 is about 229.4586132321.

The spelling of 12081284 in words is "twelve million, eighty-one thousand, two hundred eighty-four".

Divisors: 1 2 4 29 58 116 104149 208298 416596 3020321 6040642 12081284