193728223 has 4 divisors (see below), whose sum is σ = 208630408. Its totient is φ = 178826040.

The previous prime is 193728193. The next prime is 193728251. The reversal of 193728223 is 322827391.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322827391 = 29 ⋅11131979.

It is a cyclic number.

It is not a de Polignac number, because 193728223 - 2⁵ = 193728191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193720223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7451073 + ... + 7451098.

It is an arithmetic number, because the mean of its divisors is an integer number (52157602).

Almost surely, 2^193728223 is an apocalyptic number.

193728223 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

193728223 is a deficient number, since it is larger than the sum of its proper divisors (14902185).

193728223 is a wasteful number, since it uses less digits than its factorization.

193728223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14902184.

The product of its digits is 36288, while the sum is 37.

The square root of 193728223 is about 13918.6286321606. The cubic root of 193728223 is about 578.6255833328.

The spelling of 193728223 in words is "one hundred ninety-three million, seven hundred twenty-eight thousand, two hundred twenty-three".