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12005231450 = 252240104629
BaseRepresentation
bin10110010111001000…
…10100101101011010
31010222122221221112212
423023210110231122
5144041314401300
65303133435122
7603333532532
oct131344245532
933878857485
1012005231450
115100705093
1223b063baa2
131194276a64
1481c5c04c2
154a3e55935
hex2cb914b5a

12005231450 has 12 divisors (see below), whose sum is σ = 22329730590. Its totient is φ = 4802092560.

The previous prime is 12005231401. The next prime is 12005231467. The reversal of 12005231450 is 5413250021.

12005231450 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 11743406689 + 261824761 = 108367^2 + 16181^2 .

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 5 ways as a sum of consecutive naturals, for example, 120052265 + ... + 120052364.

Almost surely, 212005231450 is an apocalyptic number.

12005231450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12005231450 is a deficient number, since it is larger than the sum of its proper divisors (10324499140).

12005231450 is a wasteful number, since it uses less digits than its factorization.

12005231450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240104641 (or 240104636 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 12005231450 its reverse (5413250021), we get a palindrome (17418481471).

The spelling of 12005231450 in words is "twelve billion, five million, two hundred thirty-one thousand, four hundred fifty".

Divisors: 1 2 5 10 25 50 240104629 480209258 1200523145 2401046290 6002615725 12005231450