20330316 has 36 divisors (see below), whose sum is σ = 52782912. Its totient is φ = 6593184.

The previous prime is 20330309. The next prime is 20330333. The reversal of 20330316 is 61303302.

It is a happy number.

20330316 is a `hidden beast` number, since 20 + 330 + 316 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 6300 + ... + 8963.

It is an arithmetic number, because the mean of its divisors is an integer number (1466192).

Almost surely, 2^20330316 is an apocalyptic number.

It is an amenable number.

20330316 is an abundant number, since it is smaller than the sum of its proper divisors (32452596).

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

20330316 is a wasteful number, since it uses less digits than its factorization.

20330316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15310 (or 15305 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 20330316 is about 4508.9151688627. The cubic root of 20330316 is about 272.9279687593.

Adding to 20330316 its reverse (61303302), we get a palindrome (81633618).

The spelling of 20330316 in words is "twenty million, three hundred thirty thousand, three hundred sixteen".