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188093 = 239787
BaseRepresentation
bin101101111010111101
3100120000102
4231322331
522004333
64010445
71412243
oct557275
9316012
10188093
11119354
1290a25
13677c9
144c793
153aae8
hex2debd

188093 has 4 divisors (see below), whose sum is σ = 189120. Its totient is φ = 187068.

The previous prime is 188029. The next prime is 188107. The reversal of 188093 is 390881.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 390881 = 1722993.

It is a cyclic number.

It is not a de Polignac number, because 188093 - 26 = 188029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (188693) by changing a digit.

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, 155 + ... + 632.

It is an arithmetic number, because the mean of its divisors is an integer number (47280).

2188093 is an apocalyptic number.

It is an amenable number.

188093 is a deficient number, since it is larger than the sum of its proper divisors (1027).

188093 is an equidigital number, since it uses as much as digits as its factorization.

188093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 188093 is about 433.6968987669. The cubic root of 188093 is about 57.2959877879.

The spelling of 188093 in words is "one hundred eighty-eight thousand, ninety-three".

Divisors: 1 239 787 188093