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18330741 = 32111314243
BaseRepresentation
bin100010111101…
…1010001110101
31021111022001100
41011323101311
514143040431
61452520313
7311544252
oct105732165
937438040
1018330741
11a390180
126180099
133a4a6c0
142612429
1519214e6
hex117b475

18330741 has 24 divisors (see below), whose sum is σ = 31108896. Its totient is φ = 10254240.

The previous prime is 18330733. The next prime is 18330749. The reversal of 18330741 is 14703381.

It is an interprime number because it is at equal distance from previous prime (18330733) and next prime (18330749).

It is not a de Polignac number, because 18330741 - 23 = 18330733 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18330749) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5835 + ... + 8408.

It is an arithmetic number, because the mean of its divisors is an integer number (1296204).

Almost surely, 218330741 is an apocalyptic number.

18330741 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18330741 is a deficient number, since it is larger than the sum of its proper divisors (12778155).

18330741 is a wasteful number, since it uses less digits than its factorization.

18330741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14273 (or 14270 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 18330741 is about 4281.4414628721. The cubic root of 18330741 is about 263.6695676516.

The spelling of 18330741 in words is "eighteen million, three hundred thirty thousand, seven hundred forty-one".

Divisors: 1 3 9 11 13 33 39 99 117 143 429 1287 14243 42729 128187 156673 185159 470019 555477 1410057 1666431 2036749 6110247 18330741