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18068304 = 243478009
BaseRepresentation
bin100010011101…
…1001101010000
31020222222001110
41010323031100
514111141204
61443133320
7306402162
oct104731520
936888043
1018068304
11a220a91
126074240
133988107
142584932
1518bd889
hex113b350

18068304 has 40 divisors (see below), whose sum is σ = 47675520. Its totient is φ = 5893888.

The previous prime is 18068279. The next prime is 18068333. The reversal of 18068304 is 40386081.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 1749 + ... + 6260.

It is an arithmetic number, because the mean of its divisors is an integer number (1191888).

Almost surely, 218068304 is an apocalyptic number.

It is an amenable number.

18068304 is an abundant number, since it is smaller than the sum of its proper divisors (29607216).

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

18068304 is a wasteful number, since it uses less digits than its factorization.

18068304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8067 (or 8061 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 18068304 is about 4250.6827686855. The cubic root of 18068304 is about 262.4052156657.

The spelling of 18068304 in words is "eighteen million, sixty-eight thousand, three hundred four".

Divisors: 1 2 3 4 6 8 12 16 24 47 48 94 141 188 282 376 564 752 1128 2256 8009 16018 24027 32036 48054 64072 96108 128144 192216 376423 384432 752846 1129269 1505692 2258538 3011384 4517076 6022768 9034152 18068304