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8105216 = 2874523
BaseRepresentation
bin11110111010110100000000
3120020210021012
4132322310000
54033331331
6445420052
7125615240
oct36726400
916223235
108105216
114636629
12286a628
1318aa2b2
14110db20
15aa182b
hex7bad00

8105216 has 36 divisors (see below), whose sum is σ = 18494112. Its totient is φ = 3472896.

The previous prime is 8105189. The next prime is 8105219. The reversal of 8105216 is 6125018.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 8105191 and 8105200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8105219) 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 3 ways as a sum of consecutive naturals, for example, 470 + ... + 4053.

Almost surely, 28105216 is an apocalyptic number.

It is an amenable number.

8105216 is an abundant number, since it is smaller than the sum of its proper divisors (10388896).

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

8105216 is an equidigital number, since it uses as much as digits as its factorization.

8105216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4546 (or 4532 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 8105216 is about 2846.9661044698. The cubic root of 8105216 is about 200.8729839509.

The spelling of 8105216 in words is "eight million, one hundred five thousand, two hundred sixteen".

Divisors: 1 2 4 7 8 14 16 28 32 56 64 112 128 224 256 448 896 1792 4523 9046 18092 31661 36184 63322 72368 126644 144736 253288 289472 506576 578944 1013152 1157888 2026304 4052608 8105216