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18300284 = 2243106397
BaseRepresentation
bin100010111001…
…1110101111100
31021102202021022
41011303311330
514141102114
61452123312
7311356412
oct105636574
937382238
1018300284
11a36a302
126166538
133a39892
1426052b2
15191748e
hex1173d7c

18300284 has 12 divisors (see below), whose sum is σ = 32770584. Its totient is φ = 8937264.

The previous prime is 18300281. The next prime is 18300299. The reversal of 18300284 is 48200381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18300281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53027 + ... + 53370.

It is an arithmetic number, because the mean of its divisors is an integer number (2730882).

Almost surely, 218300284 is an apocalyptic number.

It is an amenable number.

18300284 is a deficient number, since it is larger than the sum of its proper divisors (14470300).

18300284 is a wasteful number, since it uses less digits than its factorization.

18300284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106444 (or 106442 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 26.

The square root of 18300284 is about 4277.8831213580. The cubic root of 18300284 is about 263.5234554312.

The spelling of 18300284 in words is "eighteen million, three hundred thousand, two hundred eighty-four".

Divisors: 1 2 4 43 86 172 106397 212794 425588 4575071 9150142 18300284