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130706386 = 2115356681
BaseRepresentation
bin1111100101001…
…10101111010010
3100002221120110021
413302212233102
5231430101021
620545254054
73144662116
oct762465722
9302846407
10130706386
1167864708
123793432a
1321105175
1413505746
15b71cc41
hex7ca6bd2

130706386 has 8 divisors (see below), whose sum is σ = 196233084. Its totient is φ = 65295360.

The previous prime is 130706383. The next prime is 130706413. The reversal of 130706386 is 683607031.

It can be written as a sum of positive squares in 2 ways, for example, as 127577025 + 3129361 = 11295^2 + 1769^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (130706383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26035 + ... + 30646.

Almost surely, 2130706386 is an apocalyptic number.

130706386 is a deficient number, since it is larger than the sum of its proper divisors (65526698).

130706386 is a wasteful number, since it uses less digits than its factorization.

130706386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57836.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 130706386 is about 11432.6893599013. The cubic root of 130706386 is about 507.4955855537.

The spelling of 130706386 in words is "one hundred thirty million, seven hundred six thousand, three hundred eighty-six".

Divisors: 1 2 1153 2306 56681 113362 65353193 130706386