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130709 = 235683
BaseRepresentation
bin11111111010010101
320122022002
4133322111
513140314
62445045
71053035
oct377225
9218262
10130709
118a227
1263785
1347657
14358c5
1528ade
hex1fe95

130709 has 4 divisors (see below), whose sum is σ = 136416. Its totient is φ = 125004.

The previous prime is 130699. The next prime is 130729. The reversal of 130709 is 907031.

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 not a de Polignac number, because 130709 - 24 = 130693 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130729) 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, 2819 + ... + 2864.

It is an arithmetic number, because the mean of its divisors is an integer number (34104).

2130709 is an apocalyptic number.

It is an amenable number.

130709 is a deficient number, since it is larger than the sum of its proper divisors (5707).

130709 is an equidigital number, since it uses as much as digits as its factorization.

130709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5706.

The product of its (nonzero) digits is 189, while the sum is 20.

The square root of 130709 is about 361.5369967237. The cubic root of 130709 is about 50.7498968670.

The spelling of 130709 in words is "one hundred thirty thousand, seven hundred nine".

Divisors: 1 23 5683 130709