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168471368 = 231323532
BaseRepresentation
bin10100000101010…
…10101101001000
3102202000020021022
422002222231020
5321112040433
624414532012
74113661112
oct1202525510
9382006238
10168471368
118710903a
1248507008
1328b98600
14185363b2
15ebcc698
hexa0aab48

168471368 has 36 divisors (see below), whose sum is σ = 343023435. Its totient is φ = 77535744.

The previous prime is 168471367. The next prime is 168471383. The reversal of 168471368 is 863174861.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 5 ways, for example, as 14760964 + 153710404 = 3842^2 + 12398^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=9178.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168471367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 477080 + ... + 477432.

Almost surely, 2168471368 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168471368

168471368 is an abundant number, since it is smaller than the sum of its proper divisors (174552067).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168471368 is an equidigital number, since it uses as much as digits as its factorization.

168471368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 738 (or 368 counting only the distinct ones).

The product of its digits is 193536, while the sum is 44.

The square root of 168471368 is about 12979.6520754603. The cubic root of 168471368 is about 552.3004123378.

The spelling of 168471368 in words is "one hundred sixty-eight million, four hundred seventy-one thousand, three hundred sixty-eight".

Divisors: 1 2 4 8 13 26 52 104 169 338 353 676 706 1352 1412 2824 4589 9178 18356 36712 59657 119314 124609 238628 249218 477256 498436 996872 1619917 3239834 6479668 12959336 21058921 42117842 84235684 168471368