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18055060 = 225902753
BaseRepresentation
bin100010011011…
…1111110010100
31020222021212221
41010313332110
514110230220
61442552124
7306315442
oct104677624
936867787
1018055060
11a212041
126068644
13398208a
14257db92
1518b99aa
hex1137f94

18055060 has 12 divisors (see below), whose sum is σ = 37915668. Its totient is φ = 7222016.

The previous prime is 18055049. The next prime is 18055061. The reversal of 18055060 is 6055081.

It can be written as a sum of positive squares in 2 ways, for example, as 2547216 + 15507844 = 1596^2 + 3938^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18055061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 451357 + ... + 451396.

It is an arithmetic number, because the mean of its divisors is an integer number (3159639).

Almost surely, 218055060 is an apocalyptic number.

18055060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18055060 is an abundant number, since it is smaller than the sum of its proper divisors (19860608).

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

18055060 is a wasteful number, since it uses less digits than its factorization.

18055060 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902762 (or 902760 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 18055060 is about 4249.1246157297. The cubic root of 18055060 is about 262.3410859767.

The spelling of 18055060 in words is "eighteen million, fifty-five thousand, sixty".

Divisors: 1 2 4 5 10 20 902753 1805506 3611012 4513765 9027530 18055060