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230130018 = 2337358379
BaseRepresentation
bin11011011011110…
…00000101100010
3121001000211001000
431231320011202
5432403130033
634500252430
75463033666
oct1555700542
9531024030
10230130018
111089a20a8
12650a1116
13388a6511
14227c68a6
151530ba13
hexdb78162

230130018 has 32 divisors (see below), whose sum is σ = 518414400. Its totient is φ = 75657888.

The previous prime is 230130013. The next prime is 230130073. The reversal of 230130018 is 810031032.

230130018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (230130013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25248 + ... + 33131.

It is an arithmetic number, because the mean of its divisors is an integer number (16200450).

Almost surely, 2230130018 is an apocalyptic number.

230130018 is an abundant number, since it is smaller than the sum of its proper divisors (288284382).

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

230130018 is a wasteful number, since it uses less digits than its factorization.

230130018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58463 (or 58457 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 230130018 is about 15170.0368489994. The cubic root of 230130018 is about 612.8079965899.

The spelling of 230130018 in words is "two hundred thirty million, one hundred thirty thousand, eighteen".

Divisors: 1 2 3 6 9 18 27 54 73 146 219 438 657 1314 1971 3942 58379 116758 175137 350274 525411 1050822 1576233 3152466 4261667 8523334 12785001 25570002 38355003 76710006 115065009 230130018