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80285982 = 23719100609
BaseRepresentation
bin1001100100100…
…01000100011110
312121001221122220
410302101010132
5131023122412
611544450210
71663263630
oct462210436
9177057586
1080285982
1141357057
1222a79966
13138305ca
14a93ca50
1570ad68c
hex4c9111e

80285982 has 32 divisors (see below), whose sum is σ = 193171200. Its totient is φ = 21731328.

The previous prime is 80285941. The next prime is 80285993. The reversal of 80285982 is 28958208.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 49507 + ... + 51102.

It is an arithmetic number, because the mean of its divisors is an integer number (6036600).

Almost surely, 280285982 is an apocalyptic number.

80285982 is an abundant number, since it is smaller than the sum of its proper divisors (112885218).

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

80285982 is a wasteful number, since it uses less digits than its factorization.

80285982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100640.

The product of its (nonzero) digits is 92160, while the sum is 42.

The square root of 80285982 is about 8960.2445279133. The cubic root of 80285982 is about 431.3997686908.

The spelling of 80285982 in words is "eighty million, two hundred eighty-five thousand, nine hundred eighty-two".

Divisors: 1 2 3 6 7 14 19 21 38 42 57 114 133 266 399 798 100609 201218 301827 603654 704263 1408526 1911571 2112789 3823142 4225578 5734713 11469426 13380997 26761994 40142991 80285982