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12303100 = 2252123031
BaseRepresentation
bin101110111011…
…101011111100
3212011001200101
4232323223330
511122144400
61115410444
7206401045
oct56735374
925131611
1012303100
116a43557
124153a24
132719c54
1418c38cc
15113056a
hexbbbafc

12303100 has 18 divisors (see below), whose sum is σ = 26697944. Its totient is φ = 4921200.

The previous prime is 12303073. The next prime is 12303103. The reversal of 12303100 is 130321.

It is a super-2 number, since 2×123031002 = 302732539220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12303103) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 61416 + ... + 61615.

Almost surely, 212303100 is an apocalyptic number.

12303100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

12303100 is an abundant number, since it is smaller than the sum of its proper divisors (14394844).

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

12303100 is a wasteful number, since it uses less digits than its factorization.

12303100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123045 (or 123038 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 12303100 is about 3507.5775116168. The cubic root of 12303100 is about 230.8544149907.

Adding to 12303100 its reverse (130321), we get a palindrome (12433421).

It can be divided in two parts, 12303 and 100, that added together give a triangular number (12403 = T157).

The spelling of 12303100 in words is "twelve million, three hundred three thousand, one hundred".

Divisors: 1 2 4 5 10 20 25 50 100 123031 246062 492124 615155 1230310 2460620 3075775 6151550 12303100