20336406 has 8 divisors (see below), whose sum is σ = 40672824. Its totient is φ = 6778800.

The previous prime is 20336401. The next prime is 20336419. The reversal of 20336406 is 60463302.

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

20336406 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20336401) 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, 1694695 + ... + 1694706.

It is an arithmetic number, because the mean of its divisors is an integer number (5084103).

Almost surely, 2^20336406 is an apocalyptic number.

20336406 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.

20336406 is a wasteful number, since it uses less digits than its factorization.

20336406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3389406.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 20336406 is about 4509.5904470362. The cubic root of 20336406 is about 272.9552181373.

Adding to 20336406 its reverse (60463302), we get a palindrome (80799708).

The spelling of 20336406 in words is "twenty million, three hundred thirty-six thousand, four hundred six".