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18679055 = 55370487
BaseRepresentation
bin100011101000…
…0010100001111
31022010222211212
41013100110033
514240212210
61504205035
7314524613
oct107202417
938128755
1018679055
11a5a893a
12630977b
133b400c5
1426a3343
15198e805
hex11d050f

18679055 has 8 divisors (see below), whose sum is σ = 22838112. Its totient is φ = 14661088.

The previous prime is 18679051. The next prime is 18679061. The reversal of 18679055 is 55097681.

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

It is a cyclic number.

It is not a de Polignac number, because 18679055 - 22 = 18679051 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18679051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34979 + ... + 35508.

It is an arithmetic number, because the mean of its divisors is an integer number (2854764).

Almost surely, 218679055 is an apocalyptic number.

18679055 is a deficient number, since it is larger than the sum of its proper divisors (4159057).

18679055 is an equidigital number, since it uses as much as digits as its factorization.

18679055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70545.

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 18679055 is about 4321.9272321500. The cubic root of 18679055 is about 265.3291507482.

The spelling of 18679055 in words is "eighteen million, six hundred seventy-nine thousand, fifty-five".

Divisors: 1 5 53 265 70487 352435 3735811 18679055