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18714012 = 22319211389
BaseRepresentation
bin100011101100…
…0110110011100
31022012202210120
41013120312130
514242322022
61505034540
7315031542
oct107306634
938182716
1018714012
11a622129
126325a50
133b52ca5
1426b1d92
151999d5c
hex11d8d9c

18714012 has 48 divisors (see below), whose sum is σ = 46300800. Its totient is φ = 5866560.

The previous prime is 18714011. The next prime is 18714013. The reversal of 18714012 is 21041781.

It is an interprime number because it is at equal distance from previous prime (18714011) and next prime (18714013).

It is a super-2 number, since 2×187140122 = 700428490272288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18714011) 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, 47914 + ... + 48302.

It is an arithmetic number, because the mean of its divisors is an integer number (964600).

Almost surely, 218714012 is an apocalyptic number.

18714012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18714012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23150400).

18714012 is an abundant number, since it is smaller than the sum of its proper divisors (27586788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18714012 is a wasteful number, since it uses less digits than its factorization.

18714012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626 (or 624 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 24.

The square root of 18714012 is about 4325.9694867162. The cubic root of 18714012 is about 265.4945647399.

Adding to 18714012 its reverse (21041781), we get a palindrome (39755793).

The spelling of 18714012 in words is "eighteen million, seven hundred fourteen thousand, twelve".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 211 228 389 422 633 778 844 1167 1266 1556 2334 2532 4009 4668 7391 8018 12027 14782 16036 22173 24054 29564 44346 48108 82079 88692 164158 246237 328316 492474 984948 1559501 3119002 4678503 6238004 9357006 18714012