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18010075 = 52720403
BaseRepresentation
bin100010010110…
…0111111011011
31020220000011211
41010230333123
514102310300
61442003551
7306040336
oct104547733
936800154
1018010075
11a191266
1260465b7
133967765
14256b61d
1518ab4ba
hex112cfdb

18010075 has 6 divisors (see below), whose sum is σ = 22332524. Its totient is φ = 14408040.

The previous prime is 18010063. The next prime is 18010079. The reversal of 18010075 is 57001081.

It is not a de Polignac number, because 18010075 - 211 = 18008027 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18010079) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 360177 + ... + 360226.

Almost surely, 218010075 is an apocalyptic number.

18010075 is a deficient number, since it is larger than the sum of its proper divisors (4322449).

18010075 is an equidigital number, since it uses as much as digits as its factorization.

18010075 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720413 (or 720408 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 22.

The square root of 18010075 is about 4243.8278711559. The cubic root of 18010075 is about 262.1230265409.

The spelling of 18010075 in words is "eighteen million, ten thousand, seventy-five".

Divisors: 1 5 25 720403 3602015 18010075