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315247164 = 223191382663
BaseRepresentation
bin10010110010100…
…100101000111100
3210222012012210220
4102302210220330
51121200402124
651140501340
710545361641
oct2262445074
9728165726
10315247164
11151a48951
12896aa850
1350408aab
142dc21dc8
151ca21879
hex12ca4a3c

315247164 has 24 divisors (see below), whose sum is σ = 774291840. Its totient is φ = 99551664.

The previous prime is 315247129. The next prime is 315247169. The reversal of 315247164 is 461742513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315247169) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 691104 + ... + 691559.

It is an arithmetic number, because the mean of its divisors is an integer number (32262160).

Almost surely, 2315247164 is an apocalyptic number.

It is an amenable number.

315247164 is an abundant number, since it is smaller than the sum of its proper divisors (459044676).

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

315247164 is a wasteful number, since it uses less digits than its factorization.

315247164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382689 (or 1382687 counting only the distinct ones).

The product of its digits is 20160, while the sum is 33.

The square root of 315247164 is about 17755.2010408218. The cubic root of 315247164 is about 680.5871255595.

Adding to 315247164 its reverse (461742513), we get a palindrome (776989677).

The spelling of 315247164 in words is "three hundred fifteen million, two hundred forty-seven thousand, one hundred sixty-four".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 1382663 2765326 4147989 5530652 8295978 16591956 26270597 52541194 78811791 105082388 157623582 315247164