20130830 has 8 divisors (see below), whose sum is σ = 36235512. Its totient is φ = 8052328.

The previous prime is 20130829. The next prime is 20130833. The reversal of 20130830 is 3803102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 20130799 and 20130808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20130833) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1006532 + ... + 1006551.

It is an arithmetic number, because the mean of its divisors is an integer number (4529439).

Almost surely, 2^20130830 is an apocalyptic number.

20130830 is a deficient number, since it is larger than the sum of its proper divisors (16104682).

20130830 is a wasteful number, since it uses less digits than its factorization.

20130830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2013090.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 20130830 is about 4486.7393505752. The cubic root of 20130830 is about 272.0323544990.

Adding to 20130830 its reverse (3803102), we get a palindrome (23933932).

The spelling of 20130830 in words is "twenty million, one hundred thirty thousand, eight hundred thirty".