20197093 has 4 divisors (see below), whose sum is σ = 23082400. Its totient is φ = 17311788.

The previous prime is 20197087. The next prime is 20197097. The reversal of 20197093 is 39079102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 20197093 - 2²¹ = 18099941 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 (20197097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1442643 + ... + 1442656.

It is an arithmetic number, because the mean of its divisors is an integer number (5770600).

Almost surely, 2^20197093 is an apocalyptic number.

It is an amenable number.

20197093 is a deficient number, since it is larger than the sum of its proper divisors (2885307).

20197093 is an equidigital number, since it uses as much as digits as its factorization.

20197093 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2885306.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 20197093 is about 4494.1175997074. The cubic root of 20197093 is about 272.3305031283.

The spelling of 20197093 in words is "twenty million, one hundred ninety-seven thousand, ninety-three".