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130757609 = 631120719
BaseRepresentation
bin1111100101100…
…11001111101001
3100010001011201102
413302303033221
5231433220414
620550331145
73145264343
oct762631751
9303034642
10130757609
116789a144
1237959ab5
1321122588
141351a293
15b72cede
hex7cb33e9

130757609 has 4 divisors (see below), whose sum is σ = 130784640. Its totient is φ = 130730580.

The previous prime is 130757567. The next prime is 130757633. The reversal of 130757609 is 906757031.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-130757609 is a prime.

It is a super-2 number, since 2×1307576092 = 34195104622793762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130757699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4049 + ... + 16670.

It is an arithmetic number, because the mean of its divisors is an integer number (32696160).

Almost surely, 2130757609 is an apocalyptic number.

It is an amenable number.

130757609 is a deficient number, since it is larger than the sum of its proper divisors (27031).

130757609 is an equidigital number, since it uses as much as digits as its factorization.

130757609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27030.

The product of its (nonzero) digits is 39690, while the sum is 38.

The square root of 130757609 is about 11434.9293395281. The cubic root of 130757609 is about 507.5618716578.

The spelling of 130757609 in words is "one hundred thirty million, seven hundred fifty-seven thousand, six hundred nine".

Divisors: 1 6311 20719 130757609