Search a number
-
+
18027086 = 27111961101
BaseRepresentation
bin100010011000…
…1001001001110
31020220212111212
41010301021032
514103331321
61442214422
7306141050
oct104611116
936825455
1018027086
11a1a3020
126054412
13397241c
1425738d0
1518b155b
hex113124e

18027086 has 64 divisors (see below), whose sum is σ = 36426240. Its totient is φ = 6480000.

The previous prime is 18027059. The next prime is 18027169. The reversal of 18027086 is 68072081.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178436 + ... + 178536.

It is an arithmetic number, because the mean of its divisors is an integer number (569160).

Almost surely, 218027086 is an apocalyptic number.

18027086 is an abundant number, since it is smaller than the sum of its proper divisors (18399154).

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

18027086 is a wasteful number, since it uses less digits than its factorization.

18027086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201.

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 18027086 is about 4245.8316028783. The cubic root of 18027086 is about 262.2055279864.

It can be divided in two parts, 1802 and 7086, that added together give a palindrome (8888).

The spelling of 18027086 in words is "eighteen million, twenty-seven thousand, eighty-six".

Divisors: 1 2 7 11 14 19 22 38 61 77 101 122 133 154 202 209 266 418 427 671 707 854 1111 1159 1342 1414 1463 1919 2222 2318 2926 3838 4697 6161 7777 8113 9394 12322 12749 13433 15554 16226 21109 25498 26866 42218 43127 67771 86254 89243 117059 135542 147763 178486 234118 295526 474397 819413 948794 1287649 1638826 2575298 9013543 18027086