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230188 = 2278221
BaseRepresentation
bin111000001100101100
3102200202111
4320030230
524331223
64533404
71646050
oct701454
9380674
10230188
11147a42
12b1264
1380a0a
145dc60
154830d
hex3832c

230188 has 12 divisors (see below), whose sum is σ = 460432. Its totient is φ = 98640.

The previous prime is 230149. The next prime is 230189. The reversal of 230188 is 881032.

230188 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

230188 is an admirable number.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (230189) 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, 4083 + ... + 4138.

2230188 is an apocalyptic number.

230188 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

230188 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

230188 is a wasteful number, since it uses less digits than its factorization.

230188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8232 (or 8230 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 22.

The square root of 230188 is about 479.7791158439. The cubic root of 230188 is about 61.2859458585.

The spelling of 230188 in words is "two hundred thirty thousand, one hundred eighty-eight".

Divisors: 1 2 4 7 14 28 8221 16442 32884 57547 115094 230188