8420448 has 48 divisors (see below), whose sum is σ = 22256640. Its totient is φ = 2787456.

The previous prime is 8420443. The next prime is 8420449. The reversal of 8420448 is 8440248.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8420441) 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, 22761 + ... + 23127.

It is an arithmetic number, because the mean of its divisors is an integer number (463680).

Almost surely, 2^8420448 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 8420448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11128320).

8420448 is an abundant number, since it is smaller than the sum of its proper divisors (13836192).

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

8420448 is a wasteful number, since it uses less digits than its factorization.

8420448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 619 (or 611 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 30.

The square root of 8420448 is about 2901.8008201805. The cubic root of 8420448 is about 203.4440843101. Note that the first 3 decimals are identical.

The spelling of 8420448 in words is "eight million, four hundred twenty thousand, four hundred forty-eight".