3128220830 has 64 divisors (see below), whose sum is σ = 6958835712. Its totient is φ = 987947520.

The previous prime is 3128220827. The next prime is 3128220839. The reversal of 3128220830 is 380228213.

It is a super-2 number, since 2×3128220830² = 19571531122491777800, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3128220793 and 3128220802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3128220839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27965 + ... + 83895.

It is an arithmetic number, because the mean of its divisors is an integer number (108731808).

Almost surely, 2^3128220830 is an apocalyptic number.

It is a pronic number, being equal to 55930×55931.

3128220830 is an abundant number, since it is smaller than the sum of its proper divisors (3830614882).

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

3128220830 is a wasteful number, since it uses less digits than its factorization.

3128220830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56009.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 3128220830 is about 55930.4999977651. The cubic root of 3128220830 is about 1462.5109773934.

The spelling of 3128220830 in words is "three billion, one hundred twenty-eight million, two hundred twenty thousand, eight hundred thirty".