20338806 has 8 divisors (see below), whose sum is σ = 40677624. Its totient is φ = 6779600.

The previous prime is 20338793. The next prime is 20338807. The reversal of 20338806 is 60883302.

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

20338806 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20338807) by changing a digit.

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, 1694895 + ... + 1694906.

It is an arithmetic number, because the mean of its divisors is an integer number (5084703).

Almost surely, 2^20338806 is an apocalyptic number.

20338806 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.

20338806 is a wasteful number, since it uses less digits than its factorization.

20338806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389806.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 20338806 is about 4509.8565387382. The cubic root of 20338806 is about 272.9659553140.

The spelling of 20338806 in words is "twenty million, three hundred thirty-eight thousand, eight hundred six".