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312530472 = 23325577793
BaseRepresentation
bin10010101000001…
…101011000101000
3210210002012012200
4102220031120220
51120001433342
651002340200
710513315362
oct2250153050
9723065180
10312530472
11150462851
12887ba660
134c997397
142d715d32
151c68694c
hex12a0d628

312530472 has 48 divisors (see below), whose sum is σ = 848065140. Its totient is φ = 103976448.

The previous prime is 312530467. The next prime is 312530473. The reversal of 312530472 is 274035213.

It can be written as a sum of positive squares in 2 ways, for example, as 310957956 + 1572516 = 17634^2 + 1254^2 .

It is not an unprimeable number, because it can be changed into a prime (312530473) 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, 36208 + ... + 44000.

Almost surely, 2312530472 is an apocalyptic number.

It is an amenable number.

312530472 is an abundant number, since it is smaller than the sum of its proper divisors (535534668).

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

312530472 is a wasteful number, since it uses less digits than its factorization.

312530472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8362 (or 8355 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 312530472 is about 17678.5313869676. The cubic root of 312530472 is about 678.6264604275.

Adding to 312530472 its reverse (274035213), we get a palindrome (586565685).

The spelling of 312530472 in words is "three hundred twelve million, five hundred thirty thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 557 1114 1671 2228 3342 4456 5013 6684 7793 10026 13368 15586 20052 23379 31172 40104 46758 62344 70137 93516 140274 187032 280548 561096 4340701 8681402 13022103 17362804 26044206 34725608 39066309 52088412 78132618 104176824 156265236 312530472