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18084634 = 217531901
BaseRepresentation
bin100010011111…
…1001100011010
31021000210110021
41010333030122
514112202014
61443341054
7306500611
oct104771432
937023407
1018084634
11a232287
12608178a
133992689
14258a878
1518c3624
hex113f31a

18084634 has 8 divisors (see below), whose sum is σ = 28722708. Its totient is φ = 8510400.

The previous prime is 18084629. The next prime is 18084641. The reversal of 18084634 is 43648081.

It can be written as a sum of positive squares in 2 ways, for example, as 17247409 + 837225 = 4153^2 + 915^2 .

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 531901 = 18084634 / (1 + 8 + 0 + 8 + 4 + 6 + 3 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 18084634.

It is an unprimeable number.

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, 265917 + ... + 265984.

Almost surely, 218084634 is an apocalyptic number.

18084634 is a deficient number, since it is larger than the sum of its proper divisors (10638074).

18084634 is a wasteful number, since it uses less digits than its factorization.

18084634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531920.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 18084634 is about 4252.6032027453. The cubic root of 18084634 is about 262.4842451618.

The spelling of 18084634 in words is "eighteen million, eighty-four thousand, six hundred thirty-four".

Divisors: 1 2 17 34 531901 1063802 9042317 18084634