190806 has 48 divisors (see below), whose sum is σ = 492480. Its totient is φ = 48720.

The previous prime is 190793. The next prime is 190807. The reversal of 190806 is 608091.

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 23 ways as a sum of consecutive naturals, for example, 3205 + ... + 3263.

It is an arithmetic number, because the mean of its divisors is an integer number (10260).

2¹⁹⁰⁸⁰⁶ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190806, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246240).

190806 is an abundant number, since it is smaller than the sum of its proper divisors (301674).

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

190806 is a wasteful number, since it uses less digits than its factorization.

190806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 82 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 190806 is about 436.8134613310. The cubic root of 190806 is about 57.5701475325.

Adding to 190806 its reverse (608091), we get a palindrome (798897).

The spelling of 190806 in words is "one hundred ninety thousand, eight hundred six".