20009336 has 32 divisors (see below), whose sum is σ = 38394000. Its totient is φ = 9774336.

The previous prime is 20009329. The next prime is 20009347. The reversal of 20009336 is 63390002.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 111695 + ... + 111873.

Almost surely, 2^20009336 is an apocalyptic number.

It is an amenable number.

20009336 is a deficient number, since it is larger than the sum of its proper divisors (18384664).

20009336 is a wasteful number, since it uses less digits than its factorization.

20009336 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 427 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 20009336 is about 4473.1796297488. The cubic root of 20009336 is about 271.4839914273.

Adding to 20009336 its reverse (63390002), we get a palindrome (83399338).

The spelling of 20009336 in words is "twenty million, nine thousand, three hundred thirty-six".