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160730105 = 5148921589
BaseRepresentation
bin10011001010010…
…00101111111001
3102012102221020212
421211020233321
5312121330410
623541000505
73661116614
oct1145105771
9365387225
10160730105
11828009a8
12459b3135
13273b7b93
14174bd17b
15e19db05
hex9948bf9

160730105 has 8 divisors (see below), whose sum is σ = 193014600. Its totient is φ = 128491776.

The previous prime is 160730077. The next prime is 160730107. The reversal of 160730105 is 501037061.

It can be written as a sum of positive squares in 4 ways, for example, as 3904576 + 156825529 = 1976^2 + 12523^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-160730105 is a prime.

It is a super-2 number, since 2×1607301052 = 51668333306622050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (160730107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3350 + ... + 18239.

It is an arithmetic number, because the mean of its divisors is an integer number (24126825).

Almost surely, 2160730105 is an apocalyptic number.

It is an amenable number.

160730105 is a deficient number, since it is larger than the sum of its proper divisors (32284495).

160730105 is a wasteful number, since it uses less digits than its factorization.

160730105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23083.

The product of its (nonzero) digits is 630, while the sum is 23.

The square root of 160730105 is about 12677.9377266178. The cubic root of 160730105 is about 543.7080245926.

Adding to 160730105 its reverse (501037061), we get a palindrome (661767166).

The spelling of 160730105 in words is "one hundred sixty million, seven hundred thirty thousand, one hundred five".

Divisors: 1 5 1489 7445 21589 107945 32146021 160730105