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18024008 = 23192792
BaseRepresentation
bin100010011000…
…0011001001000
31020220201021212
41010300121020
514103232013
61442152252
7306126062
oct104603110
936821255
1018024008
11a1a0782
126052688
133970bc2
142572732
1518b06a8
hex1130648

18024008 has 36 divisors (see below), whose sum is σ = 36124515. Its totient is φ = 8429616.

The previous prime is 18023981. The next prime is 18024011. The reversal of 18024008 is 80042081.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 9012004 + 9012004 = 3002^2 + 3002^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=3002.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 228113 + ... + 228191.

Almost surely, 218024008 is an apocalyptic number.

It is an amenable number.

18024008 is an abundant number, since it is smaller than the sum of its proper divisors (18100507).

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

18024008 is an equidigital number, since it uses as much as digits as its factorization.

18024008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 18024008 is about 4245.4691142440. The cubic root of 18024008 is about 262.1906038781.

Multiplying 18024008 by its product of nonzero digits (512), we get a square (9228292096 = 960642).

Adding to 18024008 its reverse (80042081), we get a palindrome (98066089).

The spelling of 18024008 in words is "eighteen million, twenty-four thousand, eight".

Divisors: 1 2 4 8 19 38 76 79 152 158 316 361 632 722 1444 1501 2888 3002 6004 6241 12008 12482 24964 28519 49928 57038 114076 118579 228152 237158 474316 948632 2253001 4506002 9012004 18024008