190381928 has 16 divisors (see below), whose sum is σ = 389417760. Its totient is φ = 86537200.

The previous prime is 190381927. The next prime is 190381931. The reversal of 190381928 is 829183091.

It is not an unprimeable number, because it can be changed into a prime (190381927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1081628 + ... + 1081803.

It is an arithmetic number, because the mean of its divisors is an integer number (24338610).

Almost surely, 2^190381928 is an apocalyptic number.

It is an amenable number.

190381928 is an abundant number, since it is smaller than the sum of its proper divisors (199035832).

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

190381928 is a wasteful number, since it uses less digits than its factorization.

190381928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163448 (or 2163444 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 41.

The square root of 190381928 is about 13797.8957816038. The cubic root of 190381928 is about 575.2746544210.

The spelling of 190381928 in words is "one hundred ninety million, three hundred eighty-one thousand, nine hundred twenty-eight".