20330830 has 32 divisors (see below), whose sum is σ = 40338144. Its totient is φ = 7330176.

The previous prime is 20330819. The next prime is 20330833. The reversal of 20330830 is 3803302.

It is a junction number, because it is equal to n+sod(n) for n = 20330798 and 20330807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20330833) 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 15 ways as a sum of consecutive naturals, for example, 3772 + ... + 7408.

It is an arithmetic number, because the mean of its divisors is an integer number (1260567).

Almost surely, 2^20330830 is an apocalyptic number.

20330830 is a deficient number, since it is larger than the sum of its proper divisors (20007314).

20330830 is a wasteful number, since it uses less digits than its factorization.

20330830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3700.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 20330830 is about 4508.9721666917. The cubic root of 20330830 is about 272.9302688350.

The spelling of 20330830 in words is "twenty million, three hundred thirty thousand, eight hundred thirty".