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18680014 = 265914173
BaseRepresentation
bin100011101000…
…0100011001110
31022011001011101
41013100203032
514240230024
61504213314
7314530453
oct107204316
938131141
1018680014
11a5a9631
12630a23a
133b40682
1426a382a
15198ec44
hex11d08ce

18680014 has 8 divisors (see below), whose sum is σ = 28064520. Its totient is φ = 9325176.

The previous prime is 18680003. The next prime is 18680027. The reversal of 18680014 is 41008681.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 5769 + ... + 8404.

It is an arithmetic number, because the mean of its divisors is an integer number (3508065).

Almost surely, 218680014 is an apocalyptic number.

18680014 is a deficient number, since it is larger than the sum of its proper divisors (9384506).

18680014 is a wasteful number, since it uses less digits than its factorization.

18680014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14834.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 18680014 is about 4322.0381766014. The cubic root of 18680014 is about 265.3336914186. Note that the first 3 decimals are identical.

Adding to 18680014 its reverse (41008681), we get a palindrome (59688695).

It can be divided in two parts, 186 and 80014, that added together give a triangular number (80200 = T400).

The spelling of 18680014 in words is "eighteen million, six hundred eighty thousand, fourteen".

Divisors: 1 2 659 1318 14173 28346 9340007 18680014