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86173668 = 22327341959
BaseRepresentation
bin1010010001011…
…10011111100100
320000011002001100
411020232133210
5134030024133
612315000100
72064315120
oct510563744
9200132040
1086173668
1144708609
1224a39030
1314b12449
14b632580
157872e13
hex522e7e4

86173668 has 36 divisors (see below), whose sum is σ = 248946880. Its totient is φ = 24620976.

The previous prime is 86173657. The next prime is 86173669. The reversal of 86173668 is 86637168.

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (86173669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 170728 + ... + 171231.

Almost surely, 286173668 is an apocalyptic number.

It is an amenable number.

86173668 is an abundant number, since it is smaller than the sum of its proper divisors (162773212).

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

86173668 is a wasteful number, since it uses less digits than its factorization.

86173668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 341976 (or 341971 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 86173668 is about 9282.9773241132. The cubic root of 86173668 is about 441.6974171699.

It can be divided in two parts, 861 and 73668, that added together give a square (74529 = 2732).

The spelling of 86173668 in words is "eighty-six million, one hundred seventy-three thousand, six hundred sixty-eight".