190308 has 12 divisors (see below), whose sum is σ = 444080. Its totient is φ = 63432.

The previous prime is 190301. The next prime is 190313. The reversal of 190308 is 803091.

It is a tau number, because it is divible by the number of its divisors (12).

It is a zygodrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (190301) by changing a digit.

190308 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7918 + ... + 7941.

2¹⁹⁰³⁰⁸ is an apocalyptic number.

It is an amenable number.

190308 is an abundant number, since it is smaller than the sum of its proper divisors (253772).

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

190308 is a wasteful number, since it uses less digits than its factorization.

190308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15866 (or 15864 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 21.

The square root of 190308 is about 436.2430515206. The cubic root of 190308 is about 57.5200182348.

Adding to 190308 its reverse (803091), we get a palindrome (993399).

It can be divided in two parts, 1 and 90308, that added together give a palindrome (90309).

The spelling of 190308 in words is "one hundred ninety thousand, three hundred eight".