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18289148 = 2225717791
BaseRepresentation
bin100010111000…
…1000111111100
31021102011222212
41011301013330
514140223043
61451555552
7311312063
oct105610774
937364885
1018289148
11a3619a9
12615bbb8
133a347a7
1426011da
151914018
hex11711fc

18289148 has 12 divisors (see below), whose sum is σ = 32132352. Its totient is φ = 9108480.

The previous prime is 18289123. The next prime is 18289151. The reversal of 18289148 is 84198281.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 7868 + ... + 9923.

It is an arithmetic number, because the mean of its divisors is an integer number (2677696).

Almost surely, 218289148 is an apocalyptic number.

It is an amenable number.

18289148 is a deficient number, since it is larger than the sum of its proper divisors (13843204).

18289148 is a wasteful number, since it uses less digits than its factorization.

18289148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18052 (or 18050 counting only the distinct ones).

The product of its digits is 36864, while the sum is 41.

The square root of 18289148 is about 4276.5813449530. The cubic root of 18289148 is about 263.4699919139.

The spelling of 18289148 in words is "eighteen million, two hundred eighty-nine thousand, one hundred forty-eight".

Divisors: 1 2 4 257 514 1028 17791 35582 71164 4572287 9144574 18289148