19928193 has 8 divisors (see below), whose sum is σ = 26597856. Its totient is φ = 13272000.

The previous prime is 19928177. The next prime is 19928201. The reversal of 19928193 is 39182991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 19928193 - 2⁴ = 19928177 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19928123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 838 + ... + 6368.

It is an arithmetic number, because the mean of its divisors is an integer number (3324732).

Almost surely, 2^19928193 is an apocalyptic number.

It is an amenable number.

19928193 is a deficient number, since it is larger than the sum of its proper divisors (6669663).

19928193 is a wasteful number, since it uses less digits than its factorization.

19928193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6735.

The product of its digits is 34992, while the sum is 42.

The square root of 19928193 is about 4464.1004692995. The cubic root of 19928193 is about 271.1165151224.

The spelling of 19928193 in words is "nineteen million, nine hundred twenty-eight thousand, one hundred ninety-three".