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130523908 = 2276942433
BaseRepresentation
bin1111100011110…
…10001100000100
3100002121022010211
413301322030010
5231403231113
620541325204
73143302114
oct761721404
9302538124
10130523908
116774a5a9
1237866804
13210700a8
1413499044
15b6d3b3d
hex7c7a304

130523908 has 12 divisors (see below), whose sum is σ = 228719260. Its totient is φ = 65175552.

The previous prime is 130523849. The next prime is 130523959. The reversal of 130523908 is 809325031.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62758084 + 67765824 = 7922^2 + 8232^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 130523908.

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, 18141 + ... + 24292.

Almost surely, 2130523908 is an apocalyptic number.

It is an amenable number.

130523908 is a deficient number, since it is larger than the sum of its proper divisors (98195352).

130523908 is a wasteful number, since it uses less digits than its factorization.

130523908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43206 (or 43204 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 130523908 is about 11424.7060356055. The cubic root of 130523908 is about 507.2593055688.

Adding to 130523908 its reverse (809325031), we get a palindrome (939848939).

The spelling of 130523908 in words is "one hundred thirty million, five hundred twenty-three thousand, nine hundred eight".

Divisors: 1 2 4 769 1538 3076 42433 84866 169732 32630977 65261954 130523908