192890 has 8 divisors (see below), whose sum is σ = 347220. Its totient is φ = 77152.

The previous prime is 192889. The next prime is 192917. The reversal of 192890 is 98291.

It can be written as a sum of positive squares in 2 ways, for example, as 192721 + 169 = 439^2 + 13^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9635 + ... + 9654.

2¹⁹²⁸⁹⁰ is an apocalyptic number.

192890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

192890 is a deficient number, since it is larger than the sum of its proper divisors (154330).

192890 is a wasteful number, since it uses less digits than its factorization.

192890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19296.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 192890 is about 439.1924407364. The cubic root of 192890 is about 57.7789844696.

The spelling of 192890 in words is "one hundred ninety-two thousand, eight hundred ninety".