20195293 has 4 divisors (see below), whose sum is σ = 20204380. Its totient is φ = 20186208.

The previous prime is 20195267. The next prime is 20195297. The reversal of 20195293 is 39259102.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 13935289 + 6260004 = 3733^2 + 2502^2 .

It is a cyclic number.

It is not a de Polignac number, because 20195293 - 2⁹ = 20194781 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 (20195297) 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, 1273 + ... + 6481.

It is an arithmetic number, because the mean of its divisors is an integer number (5051095).

Almost surely, 2^20195293 is an apocalyptic number.

It is an amenable number.

20195293 is a deficient number, since it is larger than the sum of its proper divisors (9087).

20195293 is an equidigital number, since it uses as much as digits as its factorization.

20195293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9086.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 20195293 is about 4493.9173334631. The cubic root of 20195293 is about 272.3224126988.

The spelling of 20195293 in words is "twenty million, one hundred ninety-five thousand, two hundred ninety-three".