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86353971 = 3112616787
BaseRepresentation
bin1010010010110…
…10100000110011
320000111020101020
411021122200303
5134101311341
612322510523
72065665564
oct511324063
9200436336
1086353971
1144821020
1224b05443
1314b76532
14b67c16b
1578ab566
hex525a833

86353971 has 8 divisors (see below), whose sum is σ = 125605824. Its totient is φ = 52335720.

The previous prime is 86353957. The next prime is 86353973. The reversal of 86353971 is 17935368.

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

It is not a de Polignac number, because 86353971 - 27 = 86353843 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (86353973) 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, 1308361 + ... + 1308426.

It is an arithmetic number, because the mean of its divisors is an integer number (15700728).

Almost surely, 286353971 is an apocalyptic number.

86353971 is a deficient number, since it is larger than the sum of its proper divisors (39251853).

86353971 is a wasteful number, since it uses less digits than its factorization.

86353971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2616801.

The product of its digits is 136080, while the sum is 42.

The square root of 86353971 is about 9292.6837350681. The cubic root of 86353971 is about 442.0052602037.

The spelling of 86353971 in words is "eighty-six million, three hundred fifty-three thousand, nine hundred seventy-one".

Divisors: 1 3 11 33 2616787 7850361 28784657 86353971