20450413 has 8 divisors (see below), whose sum is σ = 21146048. Its totient is φ = 19764864.

The previous prime is 20450411. The next prime is 20450467. The reversal of 20450413 is 31405402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20450413 - 2¹ = 20450411 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 (20450411) 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 7 ways as a sum of consecutive naturals, for example, 1720 + ... + 6622.

It is an arithmetic number, because the mean of its divisors is an integer number (2643256).

Almost surely, 2^20450413 is an apocalyptic number.

It is an amenable number.

20450413 is a deficient number, since it is larger than the sum of its proper divisors (695635).

20450413 is an equidigital number, since it uses as much as digits as its factorization.

20450413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5043.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 20450413 is about 4522.2132855495. The cubic root of 20450413 is about 273.4643352145.

Adding to 20450413 its reverse (31405402), we get a palindrome (51855815).

The spelling of 20450413 in words is "twenty million, four hundred fifty thousand, four hundred thirteen".