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201430230 = 23529231529
BaseRepresentation
bin11000000000110…
…01010011010110
3112001000201022220
430000121103112
5403031231410
631553203210
74664062101
oct1400312326
9461021286
10201430230
11a377a571
1257560506
13329682b1
141ca75738
1512a3d070
hexc0194d6

201430230 has 32 divisors (see below), whose sum is σ = 500104800. Its totient is φ = 51862272.

The previous prime is 201430213. The next prime is 201430231. The reversal of 201430230 is 32034102.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201430231) 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 15 ways as a sum of consecutive naturals, for example, 114895 + ... + 116634.

It is an arithmetic number, because the mean of its divisors is an integer number (15628275).

Almost surely, 2201430230 is an apocalyptic number.

201430230 is an abundant number, since it is smaller than the sum of its proper divisors (298674570).

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

201430230 is a wasteful number, since it uses less digits than its factorization.

201430230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231568.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 201430230 is about 14192.6118103751. The cubic root of 201430230 is about 586.1942438294.

Adding to 201430230 its reverse (32034102), we get a palindrome (233464332).

The spelling of 201430230 in words is "two hundred one million, four hundred thirty thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 29 30 58 87 145 174 290 435 870 231529 463058 694587 1157645 1389174 2315290 3472935 6714341 6945870 13428682 20143023 33571705 40286046 67143410 100715115 201430230