3821304820 has 12 divisors (see below), whose sum is σ = 8024740164. Its totient is φ = 1528521920.

The previous prime is 3821304769. The next prime is 3821304827. The reversal of 3821304820 is 284031283.

It can be written as a sum of positive squares in 2 ways, for example, as 1739390436 + 2081914384 = 41706^2 + 45628^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3821304827) 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 3 ways as a sum of consecutive naturals, for example, 95532601 + ... + 95532640.

It is an arithmetic number, because the mean of its divisors is an integer number (668728347).

Almost surely, 2^3821304820 is an apocalyptic number.

It is an amenable number.

3821304820 is an abundant number, since it is smaller than the sum of its proper divisors (4203435344).

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

3821304820 is a wasteful number, since it uses less digits than its factorization.

3821304820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191065250 (or 191065248 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 3821304820 is about 61816.7034061183. The cubic root of 3821304820 is about 1563.4016310433.

The spelling of 3821304820 in words is "three billion, eight hundred twenty-one million, three hundred four thousand, eight hundred twenty".