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80850220 = 22511367501
BaseRepresentation
bin1001101000110…
…10110100101100
312122010121122121
410310122310230
5131144201340
612004522324
72001133633
oct464326454
9178117577
1080850220
1141701a70
12230b03a4
131399a389
14aa4851a
15717094a
hex4d1ad2c

80850220 has 24 divisors (see below), whose sum is σ = 185221008. Its totient is φ = 29400000.

The previous prime is 80850169. The next prime is 80850227. The reversal of 80850220 is 2205808.

It is not an unprimeable number, because it can be changed into a prime (80850227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 183531 + ... + 183970.

It is an arithmetic number, because the mean of its divisors is an integer number (7717542).

Almost surely, 280850220 is an apocalyptic number.

It is an amenable number.

80850220 is an abundant number, since it is smaller than the sum of its proper divisors (104370788).

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

80850220 is a wasteful number, since it uses less digits than its factorization.

80850220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367521 (or 367519 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 25.

The square root of 80850220 is about 8991.6750386121. The cubic root of 80850220 is about 432.4080150085.

The spelling of 80850220 in words is "eighty million, eight hundred fifty thousand, two hundred twenty".

Divisors: 1 2 4 5 10 11 20 22 44 55 110 220 367501 735002 1470004 1837505 3675010 4042511 7350020 8085022 16170044 20212555 40425110 80850220