20098433 has 4 divisors (see below), whose sum is σ = 20373828. Its totient is φ = 19823040.

The previous prime is 20098417. The next prime is 20098439. The reversal of 20098433 is 33489002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8862529 + 11235904 = 2977^2 + 3352^2 .

It is a cyclic number.

It is not a de Polignac number, because 20098433 - 2⁴ = 20098417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20098396 and 20098405.

It is not an unprimeable number, because it can be changed into a prime (20098439) 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 3 ways as a sum of consecutive naturals, for example, 137588 + ... + 137733.

It is an arithmetic number, because the mean of its divisors is an integer number (5093457).

Almost surely, 2^20098433 is an apocalyptic number.

It is an amenable number.

20098433 is a deficient number, since it is larger than the sum of its proper divisors (275395).

20098433 is an equidigital number, since it uses as much as digits as its factorization.

20098433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275394.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 20098433 is about 4483.1275913139. The cubic root of 20098433 is about 271.8863468731.

The spelling of 20098433 in words is "twenty million, ninety-eight thousand, four hundred thirty-three".