190720 has 36 divisors (see below), whose sum is σ = 459900. Its totient is φ = 75776.

The previous prime is 190717. The next prime is 190753. The reversal of 190720 is 27091.

It can be written as a sum of positive squares in 2 ways, for example, as 43264 + 147456 = 208^2 + 384^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1206 + ... + 1354.

It is an arithmetic number, because the mean of its divisors is an integer number (12775).

2¹⁹⁰⁷²⁰ is an apocalyptic number.

190720 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 190720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229950).

190720 is an abundant number, since it is smaller than the sum of its proper divisors (269180).

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

190720 is an equidigital number, since it uses as much as digits as its factorization.

190720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 190720 is about 436.7150100466. The cubic root of 190720 is about 57.5614969018.

The spelling of 190720 in words is "one hundred ninety thousand, seven hundred twenty".