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130720607 = 199965393
BaseRepresentation
bin1111100101010…
…10001101011111
3100002222021221222
413302222031133
5231431024412
620545443555
73145051433
oct762521537
9302867858
10130720607
1167874366
12379405bb
132110b794
141350a9c3
15b722072
hex7caa35f

130720607 has 4 divisors (see below), whose sum is σ = 130788000. Its totient is φ = 130653216.

The previous prime is 130720573. The next prime is 130720609. The reversal of 130720607 is 706027031.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 130720607 - 26 = 130720543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130720609) 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, 30698 + ... + 34695.

It is an arithmetic number, because the mean of its divisors is an integer number (32697000).

Almost surely, 2130720607 is an apocalyptic number.

130720607 is a deficient number, since it is larger than the sum of its proper divisors (67393).

130720607 is an equidigital number, since it uses as much as digits as its factorization.

130720607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67392.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 130720607 is about 11433.3112876367. The cubic root of 130720607 is about 507.5139902474.

Adding to 130720607 its reverse (706027031), we get a palindrome (836747638).

The spelling of 130720607 in words is "one hundred thirty million, seven hundred twenty thousand, six hundred seven".

Divisors: 1 1999 65393 130720607