4328457821 has 8 divisors (see below), whose sum is σ = 4347198720. Its totient is φ = 4309755408.

The previous prime is 4328457817. The next prime is 4328457829. The reversal of 4328457821 is 1287548234.

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 4328457821 - 2² = 4328457817 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 (4328457829) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 228335 + ... + 246563.

It is an arithmetic number, because the mean of its divisors is an integer number (543399840).

Almost surely, 2^4328457821 is an apocalyptic number.

It is an amenable number.

4328457821 is a deficient number, since it is larger than the sum of its proper divisors (18740899).

4328457821 is a wasteful number, since it uses less digits than its factorization.

4328457821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19243.

The product of its digits is 430080, while the sum is 44.

The square root of 4328457821 is about 65791.0162636207. The cubic root of 4328457821 is about 1629.7127501396.

The spelling of 4328457821 in words is "four billion, three hundred twenty-eight million, four hundred fifty-seven thousand, eight hundred twenty-one".