830030821 has 8 divisors (see below), whose sum is σ = 853588800. Its totient is φ = 806789280.

The previous prime is 830030819. The next prime is 830030833. The reversal of 830030821 is 128030038.

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

It is a cyclic number.

It is not a de Polignac number, because 830030821 - 2¹ = 830030819 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (830030891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73785 + ... + 84286.

It is an arithmetic number, because the mean of its divisors is an integer number (106698600).

Almost surely, 2^830030821 is an apocalyptic number.

It is an amenable number.

830030821 is a deficient number, since it is larger than the sum of its proper divisors (23557979).

830030821 is a wasteful number, since it uses less digits than its factorization.

830030821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158219.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 830030821 is about 28810.2554830741. The cubic root of 830030821 is about 939.7912698606.

Adding to 830030821 its reverse (128030038), we get a palindrome (958060859).

The spelling of 830030821 in words is "eight hundred thirty million, thirty thousand, eight hundred twenty-one".