20308366 has 16 divisors (see below), whose sum is σ = 33607728. Its totient is φ = 9144000.

The previous prime is 20308361. The next prime is 20308367. The reversal of 20308366 is 66380302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20308361) 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 7 ways as a sum of consecutive naturals, for example, 8460 + ... + 10591.

It is an arithmetic number, because the mean of its divisors is an integer number (2100483).

Almost surely, 2^20308366 is an apocalyptic number.

20308366 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

20308366 is a deficient number, since it is larger than the sum of its proper divisors (13299362).

20308366 is a wasteful number, since it uses less digits than its factorization.

20308366 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19107.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 20308366 is about 4506.4804448705. The cubic root of 20308366 is about 272.8297094861.

Adding to 20308366 its reverse (66380302), we get a palindrome (86688668).

The spelling of 20308366 in words is "twenty million, three hundred eight thousand, three hundred sixty-six".