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18888054 = 2317185177
BaseRepresentation
bin100100000001…
…1010101110110
31022112121112120
41020003111312
514313404204
61512500410
7316355133
oct110032566
938477476
1018888054
11a730969
1263aa706
133bb4283
14271958a
1519d16d9
hex1203576

18888054 has 16 divisors (see below), whose sum is σ = 39998448. Its totient is φ = 5925632.

The previous prime is 18888049. The next prime is 18888097. The reversal of 18888054 is 45088881.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 18887997 and 18888015.

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, 92487 + ... + 92690.

It is an arithmetic number, because the mean of its divisors is an integer number (2499903).

Almost surely, 218888054 is an apocalyptic number.

18888054 is an abundant number, since it is smaller than the sum of its proper divisors (21110394).

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

18888054 is a wasteful number, since it uses less digits than its factorization.

18888054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185199.

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 18888054 is about 4346.0388861583. The cubic root of 18888054 is about 266.3150675242.

The spelling of 18888054 in words is "eighteen million, eight hundred eighty-eight thousand, fifty-four".

Divisors: 1 2 3 6 17 34 51 102 185177 370354 555531 1111062 3148009 6296018 9444027 18888054