20453193 has 24 divisors (see below), whose sum is σ = 32135688. Its totient is φ = 12483072.

The previous prime is 20453171. The next prime is 20453201. The reversal of 20453193 is 39135402.

20453193 is a `hidden beast` number, since 20 + 453 + 193 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 2913849 + 17539344 = 1707^2 + 4188^2 .

It is not a de Polignac number, because 20453193 - 2⁸ = 20452937 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20453123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3855 + ... + 7467.

It is an arithmetic number, because the mean of its divisors is an integer number (1338987).

Almost surely, 2^20453193 is an apocalyptic number.

It is an amenable number.

20453193 is a deficient number, since it is larger than the sum of its proper divisors (11682495).

20453193 is a wasteful number, since it uses less digits than its factorization.

20453193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3673 (or 3670 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20453193 is about 4522.5206467190. The cubic root of 20453193 is about 273.4767261037.

Adding to 20453193 its reverse (39135402), we get a palindrome (59588595).

The spelling of 20453193 in words is "twenty million, four hundred fifty-three thousand, one hundred ninety-three".