20238195 has 32 divisors (see below), whose sum is σ = 33951744. Its totient is φ = 10281600.

The previous prime is 20238191. The next prime is 20238199. The reversal of 20238195 is 59183202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20238191) and next prime (20238199).

It is not a de Polignac number, because 20238195 - 2² = 20238191 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (20238191) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32709 + ... + 33321.

It is an arithmetic number, because the mean of its divisors is an integer number (1060992).

Almost surely, 2^20238195 is an apocalyptic number.

20238195 is a deficient number, since it is larger than the sum of its proper divisors (13713549).

20238195 is a wasteful number, since it uses less digits than its factorization.

20238195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20238195 is about 4498.6881421143. The cubic root of 20238195 is about 272.5151129289.

The spelling of 20238195 in words is "twenty million, two hundred thirty-eight thousand, one hundred ninety-five".