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18755044 = 2272118699
BaseRepresentation
bin100011110001…
…0110111100100
31022021212002021
41013202313210
514300130134
61505552524
7315262300
oct107426744
938255067
1018755044
11a64aa40
126345744
133b68879
1426c2d00
1519a70b4
hex11e2de4

18755044 has 36 divisors (see below), whose sum is σ = 41655600. Its totient is φ = 7306320.

The previous prime is 18755027. The next prime is 18755053. The reversal of 18755044 is 44055781.

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 11 ways as a sum of consecutive naturals, for example, 2194 + ... + 6505.

It is an arithmetic number, because the mean of its divisors is an integer number (1157100).

Almost surely, 218755044 is an apocalyptic number.

18755044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18755044 is an abundant number, since it is smaller than the sum of its proper divisors (22900556).

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

18755044 is a wasteful number, since it uses less digits than its factorization.

18755044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8728 (or 8719 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 18755044 is about 4330.7094107086. The cubic root of 18755044 is about 265.6884626034.

The spelling of 18755044 in words is "eighteen million, seven hundred fifty-five thousand, forty-four".

Divisors: 1 2 4 7 11 14 22 28 44 49 77 98 154 196 308 539 1078 2156 8699 17398 34796 60893 95689 121786 191378 243572 382756 426251 669823 852502 1339646 1705004 2679292 4688761 9377522 18755044