190728323 has 2 divisors, whose sum is σ = 190728324. Its totient is φ = 190728322.

The previous prime is 190728319. The next prime is 190728353. The reversal of 190728323 is 323827091.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 190728323 - 2² = 190728319 is a prime.

It is not a weakly prime, because it can be changed into another prime (190728353) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95364161 + 95364162.

It is an arithmetic number, because the mean of its divisors is an integer number (95364162).

Almost surely, 2^190728323 is an apocalyptic number.

190728323 is a deficient number, since it is larger than the sum of its proper divisors (1).

190728323 is an equidigital number, since it uses as much as digits as its factorization.

190728323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 190728323 is about 13810.4425345461. The cubic root of 190728323 is about 575.6233421547.

The spelling of 190728323 in words is "one hundred ninety million, seven hundred twenty-eight thousand, three hundred twenty-three".