190500 has 48 divisors (see below), whose sum is σ = 559104. Its totient is φ = 50400.

The previous prime is 190471. The next prime is 190507. The reversal of 190500 is 5091.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 190500.

It is not an unprimeable number, because it can be changed into a prime (190507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1437 + ... + 1563.

It is an arithmetic number, because the mean of its divisors is an integer number (11648).

2¹⁹⁰⁵⁰⁰ is an apocalyptic number.

190500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 190500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (279552).

190500 is an abundant number, since it is smaller than the sum of its proper divisors (368604).

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

190500 is a wasteful number, since it uses less digits than its factorization.

190500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 190500 is about 436.4630568559. The cubic root of 190500 is about 57.5393555399.

Adding to 190500 its reverse (5091), we get a palindrome (195591).

The spelling of 190500 in words is "one hundred ninety thousand, five hundred".