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30795018 = 2341125183
BaseRepresentation
bin111010101111…
…0010100001010
32010221112211020
41311132110022
530340420033
63020013310
7522516252
oct165362412
963845736
1030795018
1116423831
12a391236
1364c2b07
144138962
152a846b3
hex1d5e50a

30795018 has 16 divisors (see below), whose sum is σ = 63092736. Its totient is φ = 10014560.

The previous prime is 30794971. The next prime is 30795019. The reversal of 30795018 is 81059703.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30795018.

It is not an unprimeable number, because it can be changed into a prime (30795019) 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, 62346 + ... + 62837.

It is an arithmetic number, because the mean of its divisors is an integer number (3943296).

Almost surely, 230795018 is an apocalyptic number.

30795018 is an abundant number, since it is smaller than the sum of its proper divisors (32297718).

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

30795018 is a wasteful number, since it uses less digits than its factorization.

30795018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125229.

The product of its (nonzero) digits is 7560, while the sum is 33.

The square root of 30795018 is about 5549.3259050086. The cubic root of 30795018 is about 313.4441394231. Note that the first 3 decimals are identical.

The spelling of 30795018 in words is "thirty million, seven hundred ninety-five thousand, eighteen".

Divisors: 1 2 3 6 41 82 123 246 125183 250366 375549 751098 5132503 10265006 15397509 30795018