20396193 has 16 divisors (see below), whose sum is σ = 29358720. Its totient is φ = 12556544.

The previous prime is 20396191. The next prime is 20396197. The reversal of 20396193 is 39169302.

It is a cyclic number.

It is not a de Polignac number, because 20396193 - 2¹ = 20396191 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20396191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3096 + ... + 7097.

It is an arithmetic number, because the mean of its divisors is an integer number (1834920).

Almost surely, 2^20396193 is an apocalyptic number.

20396193 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

20396193 is a deficient number, since it is larger than the sum of its proper divisors (8962527).

20396193 is a wasteful number, since it uses less digits than its factorization.

20396193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10248.

The product of its (nonzero) digits is 8748, while the sum is 33.

The square root of 20396193 is about 4516.2144546069. The cubic root of 20396193 is about 273.2224434515. Note that the first 3 decimals are identical.

The spelling of 20396193 in words is "twenty million, three hundred ninety-six thousand, one hundred ninety-three".