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18673030 = 251867303
BaseRepresentation
bin100011100111…
…0110110000110
31022010200120201
41013032312012
514240014110
61504121114
7314501215
oct107166606
938120521
1018673030
11a5a4362
12630619a
133b3a43c
1426a107c
15198cb3a
hex11ced86

18673030 has 8 divisors (see below), whose sum is σ = 33611472. Its totient is φ = 7469208.

The previous prime is 18673027. The next prime is 18673037. The reversal of 18673030 is 3037681.

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

It is a self number, because there is not a number n which added to its sum of digits gives 18673030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18673037) 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 3 ways as a sum of consecutive naturals, for example, 933642 + ... + 933661.

It is an arithmetic number, because the mean of its divisors is an integer number (4201434).

Almost surely, 218673030 is an apocalyptic number.

18673030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18673030 is a deficient number, since it is larger than the sum of its proper divisors (14938442).

18673030 is a wasteful number, since it uses less digits than its factorization.

18673030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1867310.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 18673030 is about 4321.2301489275. The cubic root of 18673030 is about 265.3006200392.

The spelling of 18673030 in words is "eighteen million, six hundred seventy-three thousand, thirty".

Divisors: 1 2 5 10 1867303 3734606 9336515 18673030