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12407200 = 2552131193
BaseRepresentation
bin101111010101…
…000110100000
3212100100110221
4233111012200
511134012300
61121532424
7210313411
oct57250640
925310427
1012407200
117004793
1241a4114
132755450
14190d808
15115131a
hexbd51a0

12407200 has 72 divisors (see below), whose sum is σ = 32646348. Its totient is φ = 4577280.

The previous prime is 12407191. The next prime is 12407203. The reversal of 12407200 is 270421.

It can be written as a sum of positive squares in 6 ways, for example, as 2396304 + 10010896 = 1548^2 + 3164^2 .

It is a super-2 number, since 2×124072002 = 307877223680000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12407203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9804 + ... + 10996.

Almost surely, 212407200 is an apocalyptic number.

12407200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12407200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16323174).

12407200 is an abundant number, since it is smaller than the sum of its proper divisors (20239148).

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

12407200 is a wasteful number, since it uses less digits than its factorization.

12407200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226 (or 1213 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 16.

The square root of 12407200 is about 3522.3855552736. The cubic root of 12407200 is about 231.5036952825.

Adding to 12407200 its reverse (270421), we get a palindrome (12677621).

The spelling of 12407200 in words is "twelve million, four hundred seven thousand, two hundred".

Divisors: 1 2 4 5 8 10 13 16 20 25 26 32 40 50 52 65 80 100 104 130 160 200 208 260 325 400 416 520 650 800 1040 1193 1300 2080 2386 2600 4772 5200 5965 9544 10400 11930 15509 19088 23860 29825 31018 38176 47720 59650 62036 77545 95440 119300 124072 155090 190880 238600 248144 310180 387725 477200 496288 620360 775450 954400 1240720 1550900 2481440 3101800 6203600 12407200