8229420 has 72 divisors (see below), whose sum is σ = 25225200. Its totient is φ = 2171520.

The previous prime is 8229407. The next prime is 8229433. The reversal of 8229420 is 249228.

8229420 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (8229407) and next prime (8229433).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23406 + ... + 23754.

It is an arithmetic number, because the mean of its divisors is an integer number (350350).

Almost surely, 2^8229420 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 8229420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12612600).

8229420 is an abundant number, since it is smaller than the sum of its proper divisors (16995780).

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

8229420 is a wasteful number, since it uses less digits than its factorization.

8229420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 490 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 8229420 is about 2868.6965681299. The cubic root of 8229420 is about 201.8938435126.

It can be divided in two parts, 8229 and 420, that added together give a square (8649 = 93²).

The spelling of 8229420 in words is "eight million, two hundred twenty-nine thousand, four hundred twenty".