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18674085 = 353733647
BaseRepresentation
bin100011100111…
…1000110100101
31022010202000210
41013033012211
514240032320
61504130033
7314504253
oct107170645
938122023
1018674085
11a5a5131
126306919
133b3aa71
1426a15d3
15198d0e0
hex11cf1a5

18674085 has 16 divisors (see below), whose sum is σ = 30686976. Its totient is φ = 9690048.

The previous prime is 18674081. The next prime is 18674111. The reversal of 18674085 is 58047681.

It is not a de Polignac number, because 18674085 - 22 = 18674081 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18674081) 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 15 ways as a sum of consecutive naturals, for example, 16269 + ... + 17378.

It is an arithmetic number, because the mean of its divisors is an integer number (1917936).

Almost surely, 218674085 is an apocalyptic number.

18674085 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18674085 is a deficient number, since it is larger than the sum of its proper divisors (12012891).

18674085 is a wasteful number, since it uses less digits than its factorization.

18674085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33692.

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 18674085 is about 4321.3522189241. The cubic root of 18674085 is about 265.3056163161.

The spelling of 18674085 in words is "eighteen million, six hundred seventy-four thousand, eighty-five".

Divisors: 1 3 5 15 37 111 185 555 33647 100941 168235 504705 1244939 3734817 6224695 18674085