20427306 has 8 divisors (see below), whose sum is σ = 40854624. Its totient is φ = 6809100.

The previous prime is 20427287. The next prime is 20427311. The reversal of 20427306 is 60372402.

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

20427306 is an admirable number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1702270 + ... + 1702281.

It is an arithmetic number, because the mean of its divisors is an integer number (5106828).

Almost surely, 2^20427306 is an apocalyptic number.

20427306 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20427306 is a wasteful number, since it uses less digits than its factorization.

20427306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3404556.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 20427306 is about 4519.6577304039. The cubic root of 20427306 is about 273.3613002648.

Adding to 20427306 its reverse (60372402), we get a palindrome (80799708).

The spelling of 20427306 in words is "twenty million, four hundred twenty-seven thousand, three hundred six".