20845195 has 8 divisors (see below), whose sum is σ = 28587744. Its totient is φ = 14293824.

The previous prime is 20845193. The next prime is 20845207. The reversal of 20845195 is 59154802.

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

It is a cyclic number.

It is not a de Polignac number, because 20845195 - 2¹ = 20845193 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20845195.

It is not an unprimeable number, because it can be changed into a prime (20845193) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 297754 + ... + 297823.

It is an arithmetic number, because the mean of its divisors is an integer number (3573468).

Almost surely, 2^20845195 is an apocalyptic number.

20845195 is a deficient number, since it is larger than the sum of its proper divisors (7742549).

20845195 is an equidigital number, since it uses as much as digits as its factorization.

20845195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 595589.

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 20845195 is about 4565.6538414558. The cubic root of 20845195 is about 275.2128159805.

Adding to 20845195 its reverse (59154802), we get a palindrome (79999997).

The spelling of 20845195 in words is "twenty million, eight hundred forty-five thousand, one hundred ninety-five".