20216336 has 20 divisors (see below), whose sum is σ = 44764992. Its totient is φ = 8664096.

The previous prime is 20216311. The next prime is 20216341. The reversal of 20216336 is 63361202.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90140 + ... + 90363.

Almost surely, 2^20216336 is an apocalyptic number.

It is an amenable number.

20216336 is an abundant number, since it is smaller than the sum of its proper divisors (24548656).

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

20216336 is a wasteful number, since it uses less digits than its factorization.

20216336 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180518 (or 180512 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 20216336 is about 4496.2579997149. The cubic root of 20216336 is about 272.4169642913.

Adding to 20216336 its reverse (63361202), we get a palindrome (83577538).

The spelling of 20216336 in words is "twenty million, two hundred sixteen thousand, three hundred thirty-six".