20413306 has 8 divisors (see below), whose sum is σ = 30697524. Its totient is φ = 10180800.

The previous prime is 20413291. The next prime is 20413331. The reversal of 20413306 is 60331402.

It can be written as a sum of positive squares in 2 ways, for example, as 18190225 + 2223081 = 4265^2 + 1491^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11925 + ... + 13528.

Almost surely, 2^20413306 is an apocalyptic number.

20413306 is a deficient number, since it is larger than the sum of its proper divisors (10284218).

20413306 is a wasteful number, since it uses less digits than its factorization.

20413306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25856.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20413306 is about 4518.1086750985. The cubic root of 20413306 is about 273.2988359530.

Adding to 20413306 its reverse (60331402), we get a palindrome (80744708).

The spelling of 20413306 in words is "twenty million, four hundred thirteen thousand, three hundred six".