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80285458 = 21117214667
BaseRepresentation
bin1001100100100…
…00111100010010
312121001220221111
410302100330102
5131023113313
611544443534
71663262251
oct462207422
9177056844
1080285458
1141356720
1222a795aa
13138302b6
14a93c798
1570ad43d
hex4c90f12

80285458 has 16 divisors (see below), whose sum is σ = 139104864. Its totient is φ = 34346560.

The previous prime is 80285453. The next prime is 80285459. The reversal of 80285458 is 85458208.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 80285458.

It is not an unprimeable number, because it can be changed into a prime (80285453) 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 7 ways as a sum of consecutive naturals, for example, 106960 + ... + 107707.

It is an arithmetic number, because the mean of its divisors is an integer number (8694054).

Almost surely, 280285458 is an apocalyptic number.

80285458 is a deficient number, since it is larger than the sum of its proper divisors (58819406).

80285458 is a wasteful number, since it uses less digits than its factorization.

80285458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214697.

The product of its (nonzero) digits is 102400, while the sum is 40.

The square root of 80285458 is about 8960.2152875921. The cubic root of 80285458 is about 431.3988301543.

The spelling of 80285458 in words is "eighty million, two hundred eighty-five thousand, four hundred fifty-eight".

Divisors: 1 2 11 17 22 34 187 374 214667 429334 2361337 3649339 4722674 7298678 40142729 80285458