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18125260 = 225906263
BaseRepresentation
bin100010100100…
…1000111001100
31021002212011221
41011021013030
514120002020
61444253124
7310030216
oct105110714
937085157
1018125260
11a25a85a
1260a11a4
1339a800a
14259b5b6
1518d06aa
hex11491cc

18125260 has 12 divisors (see below), whose sum is σ = 38063088. Its totient is φ = 7250096.

The previous prime is 18125251. The next prime is 18125267. The reversal of 18125260 is 6252181.

It is not an unprimeable number, because it can be changed into a prime (18125267) 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, 453112 + ... + 453151.

It is an arithmetic number, because the mean of its divisors is an integer number (3171924).

Almost surely, 218125260 is an apocalyptic number.

18125260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18125260 is an abundant number, since it is smaller than the sum of its proper divisors (19937828).

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

18125260 is a wasteful number, since it uses less digits than its factorization.

18125260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 906272 (or 906270 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 18125260 is about 4257.3771268235. The cubic root of 18125260 is about 262.6806496488.

The spelling of 18125260 in words is "eighteen million, one hundred twenty-five thousand, two hundred sixty".

Divisors: 1 2 4 5 10 20 906263 1812526 3625052 4531315 9062630 18125260