190928820 has 24 divisors (see below), whose sum is σ = 534600864. Its totient is φ = 50914336.

The previous prime is 190928789. The next prime is 190928827. The reversal of 190928820 is 28829091.

190928820 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190928827) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1591014 + ... + 1591133.

It is an arithmetic number, because the mean of its divisors is an integer number (22275036).

Almost surely, 2^190928820 is an apocalyptic number.

190928820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

190928820 is an abundant number, since it is smaller than the sum of its proper divisors (343672044).

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

190928820 is a wasteful number, since it uses less digits than its factorization.

190928820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182159 (or 3182157 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 190928820 is about 13817.6995190951. The cubic root of 190928820 is about 575.8249733447.

The spelling of 190928820 in words is "one hundred ninety million, nine hundred twenty-eight thousand, eight hundred twenty".