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188030 = 2518803
BaseRepresentation
bin101101111001111110
3100112221002
4231321332
522004110
64010302
71412123
oct557176
9315832
10188030
111192a7
1290992
136777b
144c74a
153aaa5
hex2de7e

188030 has 8 divisors (see below), whose sum is σ = 338472. Its totient is φ = 75208.

The previous prime is 188029. The next prime is 188107. The reversal of 188030 is 30881.

188030 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 187993 and 188011.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9392 + ... + 9411.

It is an arithmetic number, because the mean of its divisors is an integer number (42309).

2188030 is an apocalyptic number.

188030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

188030 is a deficient number, since it is larger than the sum of its proper divisors (150442).

188030 is a wasteful number, since it uses less digits than its factorization.

188030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18810.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 188030 is about 433.6242613139. The cubic root of 188030 is about 57.2895901543.

The spelling of 188030 in words is "one hundred eighty-eight thousand, thirty".

Divisors: 1 2 5 10 18803 37606 94015 188030