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18534292 = 227661939
BaseRepresentation
bin100011010110…
…0111110010100
31021212122021021
41012230332110
514221044132
61501130524
7313352560
oct106547624
937778237
1018534292
11a50a0a7
126259a44
133abc24a
1426666a0
151961997
hex11acf94

18534292 has 12 divisors (see below), whose sum is σ = 37068640. Its totient is φ = 7943256.

The previous prime is 18534289. The next prime is 18534317. The reversal of 18534292 is 29243581.

18534292 is an admirable number.

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, 330942 + ... + 330997.

Almost surely, 218534292 is an apocalyptic number.

It is an amenable number.

18534292 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18534292 is a wasteful number, since it uses less digits than its factorization.

18534292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 661950 (or 661948 counting only the distinct ones).

The product of its digits is 17280, while the sum is 34.

The square root of 18534292 is about 4305.1471519566. The cubic root of 18534292 is about 264.6419372008.

The spelling of 18534292 in words is "eighteen million, five hundred thirty-four thousand, two hundred ninety-two".

Divisors: 1 2 4 7 14 28 661939 1323878 2647756 4633573 9267146 18534292