190320128 has 20 divisors (see below), whose sum is σ = 380269560. Its totient is φ = 95159808.

The previous prime is 190320121. The next prime is 190320157. The reversal of 190320128 is 821023091.

It is a super-2 number, since 2×190320128² = 72443502243872768, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 190320097 and 190320106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190320121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 185348 + ... + 186371.

It is an arithmetic number, because the mean of its divisors is an integer number (19013478).

Almost surely, 2^190320128 is an apocalyptic number.

It is an amenable number.

190320128 is a deficient number, since it is larger than the sum of its proper divisors (189949432).

190320128 is an frugal number, since it uses more digits than its factorization.

190320128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371737 (or 371721 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 190320128 is about 13795.6561279266. The cubic root of 190320128 is about 575.2124009260.

The spelling of 190320128 in words is "one hundred ninety million, three hundred twenty thousand, one hundred twenty-eight".