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8100085 = 57231431
BaseRepresentation
bin11110111001100011110101
3120020112020011
4132321203311
54033200320
6445340221
7125564260
oct36714365
916215204
108100085
114632794
122867671
1318a7b66
14110bcd7
15aa005a
hex7b98f5

8100085 has 8 divisors (see below), whose sum is σ = 11108736. Its totient is φ = 5554320.

The previous prime is 8100073. The next prime is 8100091. The reversal of 8100085 is 5800018.

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

It is not a de Polignac number, because 8100085 - 29 = 8099573 is a prime.

It is a super-2 number, since 2×81000852 = 131222754014450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 115681 + ... + 115750.

It is an arithmetic number, because the mean of its divisors is an integer number (1388592).

Almost surely, 28100085 is an apocalyptic number.

It is an amenable number.

8100085 is a deficient number, since it is larger than the sum of its proper divisors (3008651).

8100085 is a wasteful number, since it uses less digits than its factorization.

8100085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231443.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 8100085 is about 2846.0648270902. The cubic root of 8100085 is about 200.8305875136.

The spelling of 8100085 in words is "eight million, one hundred thousand, eighty-five".

Divisors: 1 5 7 35 231431 1157155 1620017 8100085