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168383387 = 712399923
BaseRepresentation
bin10100000100101…
…01001110011011
3102201211202120202
422002111032123
5321101232022
624413012415
74113143444
oct1202251633
9381752522
10168383387
1187058a27
124848410b
1328b67553
14185122cb
15ebb1592
hexa09539b

168383387 has 8 divisors (see below), whose sum is σ = 171486720. Its totient is φ = 165300520.

The previous prime is 168383353. The next prime is 168383389. The reversal of 168383387 is 783383861.

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

It is a cyclic number.

It is not a de Polignac number, because 168383387 - 26 = 168383323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168383389) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12008 + ... + 21930.

It is an arithmetic number, because the mean of its divisors is an integer number (21435840).

Almost surely, 2168383387 is an apocalyptic number.

168383387 is a deficient number, since it is larger than the sum of its proper divisors (3103333).

168383387 is an equidigital number, since it uses as much as digits as its factorization.

168383387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10233.

The product of its digits is 580608, while the sum is 47.

The square root of 168383387 is about 12976.2624434003. The cubic root of 168383387 is about 552.2042527661.

The spelling of 168383387 in words is "one hundred sixty-eight million, three hundred eighty-three thousand, three hundred eighty-seven".

Divisors: 1 71 239 9923 16969 704533 2371597 168383387