441821420 has 24 divisors (see below), whose sum is σ = 937394304. Its totient is φ = 174905856.

The previous prime is 441821417. The next prime is 441821423. The reversal of 441821420 is 24128144.

It is an interprime number because it is at equal distance from previous prime (441821417) and next prime (441821423).

It is a self number, because there is not a number n which added to its sum of digits gives 441821420.

It is not an unprimeable number, because it can be changed into a prime (441821423) 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, 111932 + ... + 115811.

It is an arithmetic number, because the mean of its divisors is an integer number (39058096).

Almost surely, 2^441821420 is an apocalyptic number.

It is an amenable number.

441821420 is an abundant number, since it is smaller than the sum of its proper divisors (495572884).

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

441821420 is a wasteful number, since it uses less digits than its factorization.

441821420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227849 (or 227847 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 26.

The square root of 441821420 is about 21019.5485203655. The cubic root of 441821420 is about 761.6385584536.

Adding to 441821420 its reverse (24128144), we get a palindrome (465949564).

The spelling of 441821420 in words is "four hundred forty-one million, eight hundred twenty-one thousand, four hundred twenty".