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18745060 = 225937253
BaseRepresentation
bin100011110000…
…0011011100100
31022021100101111
41013200123210
514244320220
61505434404
7315221215
oct107403344
938240344
1018745060
11a643494
12633ba04
133b64169
1426bd40c
1519a415a
hex11e06e4

18745060 has 12 divisors (see below), whose sum is σ = 39364668. Its totient is φ = 7498016.

The previous prime is 18745031. The next prime is 18745061. The reversal of 18745060 is 6054781.

It can be written as a sum of positive squares in 2 ways, for example, as 9048064 + 9696996 = 3008^2 + 3114^2 .

It is not an unprimeable number, because it can be changed into a prime (18745061) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 468607 + ... + 468646.

It is an arithmetic number, because the mean of its divisors is an integer number (3280389).

Almost surely, 218745060 is an apocalyptic number.

18745060 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18745060 is an abundant number, since it is smaller than the sum of its proper divisors (20619608).

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

18745060 is a wasteful number, since it uses less digits than its factorization.

18745060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 937262 (or 937260 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 18745060 is about 4329.5565592795. The cubic root of 18745060 is about 265.6413089871.

The spelling of 18745060 in words is "eighteen million, seven hundred forty-five thousand, sixty".

Divisors: 1 2 4 5 10 20 937253 1874506 3749012 4686265 9372530 18745060