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252471306 = 23128332797
BaseRepresentation
bin11110000110001…
…10100000001010
3122121001212112010
433003012200022
51004113040211
641015200350
76153653643
oct1703064012
9577055463
10252471306
1111a57147a
12706760b6
13403c9509
14257606ca
15172714a6
hexf0c680a

252471306 has 16 divisors (see below), whose sum is σ = 505351584. Its totient is φ = 84088944.

The previous prime is 252471287. The next prime is 252471319. The reversal of 252471306 is 603174252.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 8701 + ... + 24096.

It is an arithmetic number, because the mean of its divisors is an integer number (31584474).

Almost surely, 2252471306 is an apocalyptic number.

252471306 is an abundant number, since it is smaller than the sum of its proper divisors (252880278).

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

252471306 is a wasteful number, since it uses less digits than its factorization.

252471306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34085.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 252471306 is about 15889.3456756406. The cubic root of 252471306 is about 632.0294894241.

The spelling of 252471306 in words is "two hundred fifty-two million, four hundred seventy-one thousand, three hundred six".

Divisors: 1 2 3 6 1283 2566 3849 7698 32797 65594 98391 196782 42078551 84157102 126235653 252471306