4271821828 has 12 divisors (see below), whose sum is σ = 7677734092. Its totient is φ = 2078183520.

The previous prime is 4271821817. The next prime is 4271821843. The reversal of 4271821828 is 8281281724.

It can be written as a sum of positive squares in 2 ways, for example, as 3806643204 + 465178624 = 61698^2 + 21568^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14431683 + ... + 14431978.

Almost surely, 2^4271821828 is an apocalyptic number.

It is an amenable number.

4271821828 is a deficient number, since it is larger than the sum of its proper divisors (3405912264).

4271821828 is a wasteful number, since it uses less digits than its factorization.

4271821828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28863702 (or 28863700 counting only the distinct ones).

The product of its digits is 114688, while the sum is 43.

The square root of 4271821828 is about 65359.1755455957. The cubic root of 4271821828 is about 1622.5734928403.

It can be divided in two parts, 42718 and 21828, that added together give a palindrome (64546).

The spelling of 4271821828 in words is "four billion, two hundred seventy-one million, eight hundred twenty-one thousand, eight hundred twenty-eight".