8420559228 has 96 divisors (see below), whose sum is σ = 22283553600. Its totient is φ = 2748874752.

The previous prime is 8420559223. The next prime is 8420559253. The reversal of 8420559228 is 8229550248.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420559223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4400800 + ... + 4402712.

It is an arithmetic number, because the mean of its divisors is an integer number (232120350).

Almost surely, 2^8420559228 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8420559228, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11141776800).

8420559228 is an abundant number, since it is smaller than the sum of its proper divisors (13862994372).

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

8420559228 is a wasteful number, since it uses less digits than its factorization.

8420559228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2748 (or 2740 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The square root of 8420559228 is about 91763.6051384208. The cubic root of 8420559228 is about 2034.4498008896.

The spelling of 8420559228 in words is "eight billion, four hundred twenty million, five hundred fifty-nine thousand, two hundred twenty-eight".