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18828054 = 2327221347
BaseRepresentation
bin100011111010…
…0101100010110
31022102120020100
41013310230112
514304444204
61511314530
7316015200
oct107645426
938376210
1018828054
11a69a883
12637ba46
133b92b7b
142701770
1519bda39
hex11f4b16

18828054 has 36 divisors (see below), whose sum is σ = 47456604. Its totient is φ = 5379192.

The previous prime is 18828049. The next prime is 18828097. The reversal of 18828054 is 45082881.

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 17 ways as a sum of consecutive naturals, for example, 9792 + ... + 11555.

It is an arithmetic number, because the mean of its divisors is an integer number (1318239).

Almost surely, 218828054 is an apocalyptic number.

18828054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18828054 is an abundant number, since it is smaller than the sum of its proper divisors (28628550).

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

18828054 is a wasteful number, since it uses less digits than its factorization.

18828054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21369 (or 21359 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 36.

The square root of 18828054 is about 4339.1305580727. The cubic root of 18828054 is about 266.0327752781.

The spelling of 18828054 in words is "eighteen million, eight hundred twenty-eight thousand, fifty-four".

Divisors: 1 2 3 6 7 9 14 18 21 42 49 63 98 126 147 294 441 882 21347 42694 64041 128082 149429 192123 298858 384246 448287 896574 1046003 1344861 2092006 2689722 3138009 6276018 9414027 18828054