20450833 has 4 divisors (see below), whose sum is σ = 22023988. Its totient is φ = 18877680.

The previous prime is 20450831. The next prime is 20450839. The reversal of 20450833 is 33805402.

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 13778944 + 6671889 = 3712^2 + 2583^2 .

It is a cyclic number.

It is not a de Polignac number, because 20450833 - 2¹ = 20450831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20450798 and 20450807.

It is not an unprimeable number, because it can be changed into a prime (20450831) 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, 786558 + ... + 786583.

It is an arithmetic number, because the mean of its divisors is an integer number (5505997).

Almost surely, 2^20450833 is an apocalyptic number.

It is an amenable number.

20450833 is a deficient number, since it is larger than the sum of its proper divisors (1573155).

20450833 is a wasteful number, since it uses less digits than its factorization.

20450833 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573154.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20450833 is about 4522.2597227492. The cubic root of 20450833 is about 273.4662072913.

The spelling of 20450833 in words is "twenty million, four hundred fifty thousand, eight hundred thirty-three".