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285230118 = 2349939521
BaseRepresentation
bin10001000000000…
…100010000100110
3201212201012011110
4101000010100212
51041004330433
644145245450
710032262455
oct2100042046
9655635143
10285230118
11137006678
127b633886
1347129124
1429c4ab9c
151a092963
hex11004426

285230118 has 16 divisors (see below), whose sum is σ = 570634416. Its totient is φ = 95047680.

The previous prime is 285230111. The next prime is 285230119. The reversal of 285230118 is 811032582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (285230111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25198 + ... + 34718.

It is an arithmetic number, because the mean of its divisors is an integer number (35664651).

Almost surely, 2285230118 is an apocalyptic number.

285230118 is an abundant number, since it is smaller than the sum of its proper divisors (285404298).

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

285230118 is a wasteful number, since it uses less digits than its factorization.

285230118 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14519.

The product of its (nonzero) digits is 3840, while the sum is 30.

The square root of 285230118 is about 16888.7571478780. The cubic root of 285230118 is about 658.2615082601.

The spelling of 285230118 in words is "two hundred eighty-five million, two hundred thirty thousand, one hundred eighteen".

Divisors: 1 2 3 6 4993 9521 9986 14979 19042 28563 29958 57126 47538353 95076706 142615059 285230118