190303812 has 18 divisors (see below), whose sum is σ = 481045838. Its totient is φ = 63434592.

The previous prime is 190303807. The next prime is 190303849. The reversal of 190303812 is 218303091.

It can be written as a sum of positive squares in only one way, i.e., 157402116 + 32901696 = 12546^2 + 5736^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2643073 + ... + 2643144.

Almost surely, 2^190303812 is an apocalyptic number.

190303812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

190303812 is an abundant number, since it is smaller than the sum of its proper divisors (290742026).

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

190303812 is a wasteful number, since it uses less digits than its factorization.

190303812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5286227 (or 5286222 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 190303812 is about 13795.0647696921. The cubic root of 190303812 is about 575.1959629489.

The spelling of 190303812 in words is "one hundred ninety million, three hundred three thousand, eight hundred twelve".