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18283030 = 251828303
BaseRepresentation
bin100010110111…
…1101000010110
31021101212121021
41011233220112
514140024110
61451511354
7311255203
oct105575026
937355537
1018283030
11a358347
12615855a
133a31a7c
1425dccaa
1519122da
hex116fa16

18283030 has 8 divisors (see below), whose sum is σ = 32909472. Its totient is φ = 7313208.

The previous prime is 18283019. The next prime is 18283043. The reversal of 18283030 is 3038281.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 18282986 and 18283004.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 914142 + ... + 914161.

It is an arithmetic number, because the mean of its divisors is an integer number (4113684).

Almost surely, 218283030 is an apocalyptic number.

18283030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18283030 is a deficient number, since it is larger than the sum of its proper divisors (14626442).

18283030 is a wasteful number, since it uses less digits than its factorization.

18283030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1828310.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 18283030 is about 4275.8659941584. The cubic root of 18283030 is about 263.4406103889.

The spelling of 18283030 in words is "eighteen million, two hundred eighty-three thousand, thirty".

Divisors: 1 2 5 10 1828303 3656606 9141515 18283030