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130394216 = 23173725913
BaseRepresentation
bin1111100010110…
…10100001101000
3100002100201020102
413301122201220
5231340103331
620534444532
73142222031
oct761324150
9302321212
10130394216
1167671117
1237803748
1321026054
1413463a88
15b6aa4cb
hex7c5a868

130394216 has 32 divisors (see below), whose sum is σ = 265877640. Its totient is φ = 59701248.

The previous prime is 130394213. The next prime is 130394263. The reversal of 130394216 is 612493031.

It can be written as a sum of positive squares in 4 ways, for example, as 130188100 + 206116 = 11410^2 + 454^2 .

It is not an unprimeable number, because it can be changed into a prime (130394213) 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, 7925 + ... + 17988.

Almost surely, 2130394216 is an apocalyptic number.

It is an amenable number.

130394216 is an abundant number, since it is smaller than the sum of its proper divisors (135483424).

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

130394216 is a wasteful number, since it uses less digits than its factorization.

130394216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25973 (or 25969 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 130394216 is about 11419.0286802337. The cubic root of 130394216 is about 507.0912411473.

The spelling of 130394216 in words is "one hundred thirty million, three hundred ninety-four thousand, two hundred sixteen".

Divisors: 1 2 4 8 17 34 37 68 74 136 148 296 629 1258 2516 5032 25913 51826 103652 207304 440521 881042 958781 1762084 1917562 3524168 3835124 7670248 16299277 32598554 65197108 130394216