193028393 has 4 divisors (see below), whose sum is σ = 193103700. Its totient is φ = 192953088.

The previous prime is 193028359. The next prime is 193028417. The reversal of 193028393 is 393820391.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 88416409 + 104611984 = 9403^2 + 10228^2 .

It is a cyclic number.

It is not a de Polignac number, because 193028393 - 2⁸ = 193028137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (193028093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33668 + ... + 38981.

It is an arithmetic number, because the mean of its divisors is an integer number (48275925).

Almost surely, 2^193028393 is an apocalyptic number.

It is an amenable number.

193028393 is a deficient number, since it is larger than the sum of its proper divisors (75307).

193028393 is an equidigital number, since it uses as much as digits as its factorization.

193028393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75306.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 193028393 is about 13893.4658382997. The cubic root of 193028393 is about 577.9279941670.

The spelling of 193028393 in words is "one hundred ninety-three million, twenty-eight thousand, three hundred ninety-three".