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315249308 = 22117164757
BaseRepresentation
bin10010110010100…
…101001010011100
3210222012022202022
4102302211022130
51121200434213
651140515312
710545401123
oct2262451234
9728168668
10315249308
11151a4a520
12896abb38
1350409a6a
142dc22aba
151ca22308
hex12ca529c

315249308 has 12 divisors (see below), whose sum is σ = 601839672. Its totient is φ = 143295120.

The previous prime is 315249269. The next prime is 315249313. The reversal of 315249308 is 803942513.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3582335 + ... + 3582422.

It is an arithmetic number, because the mean of its divisors is an integer number (50153306).

Almost surely, 2315249308 is an apocalyptic number.

It is an amenable number.

315249308 is a deficient number, since it is larger than the sum of its proper divisors (286590364).

315249308 is a wasteful number, since it uses less digits than its factorization.

315249308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7164772 (or 7164770 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 315249308 is about 17755.2614173940. The cubic root of 315249308 is about 680.5886684499.

The spelling of 315249308 in words is "three hundred fifteen million, two hundred forty-nine thousand, three hundred eight".

Divisors: 1 2 4 11 22 44 7164757 14329514 28659028 78812327 157624654 315249308