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12120304 = 247108217
BaseRepresentation
bin101110001111…
…000011110000
3211210202221011
4232033003300
511100322204
61111440304
7205010110
oct56170360
924722834
1012120304
116929189
124086094
1326849a1
141877040
1510e6304
hexb8f0f0

12120304 has 20 divisors (see below), whose sum is σ = 26838064. Its totient is φ = 5194368.

The previous prime is 12120301. The next prime is 12120307. The reversal of 12120304 is 40302121.

12120304 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12120301) and next prime (12120307).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12120301) 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, 53997 + ... + 54220.

Almost surely, 212120304 is an apocalyptic number.

12120304 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12120304 is an abundant number, since it is smaller than the sum of its proper divisors (14717760).

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

12120304 is a wasteful number, since it uses less digits than its factorization.

12120304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108232 (or 108226 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 12120304 is about 3481.4226976913. The cubic root of 12120304 is about 229.7053820653.

Adding to 12120304 its reverse (40302121), we get a palindrome (52422425).

The spelling of 12120304 in words is "twelve million, one hundred twenty thousand, three hundred four".

Divisors: 1 2 4 7 8 14 16 28 56 112 108217 216434 432868 757519 865736 1515038 1731472 3030076 6060152 12120304