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190808 = 23172361
BaseRepresentation
bin101110100101011000
3100200201222
4232211120
522101213
64031212
71423202
oct564530
9320658
10190808
111203a2
1292508
1368b07
144d772
153b808
hex2e958

190808 has 32 divisors (see below), whose sum is σ = 401760. Its totient is φ = 84480.

The previous prime is 190807. The next prime is 190811. The reversal of 190808 is 808091.

190808 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (26) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190807) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3098 + ... + 3158.

It is an arithmetic number, because the mean of its divisors is an integer number (12555).

2190808 is an apocalyptic number.

It is an amenable number.

190808 is an abundant number, since it is smaller than the sum of its proper divisors (210952).

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

190808 is a wasteful number, since it uses less digits than its factorization.

190808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 190808 is about 436.8157506318. The cubic root of 190808 is about 57.5703486790.

Adding to 190808 its reverse (808091), we get a palindrome (998899).

It can be divided in two parts, 1 and 90808, that added together give a palindrome (90809).

The spelling of 190808 in words is "one hundred ninety thousand, eight hundred eight".

Divisors: 1 2 4 8 17 23 34 46 61 68 92 122 136 184 244 391 488 782 1037 1403 1564 2074 2806 3128 4148 5612 8296 11224 23851 47702 95404 190808