8442280 has 64 divisors (see below), whose sum is σ = 23690880. Its totient is φ = 2630400.

The previous prime is 8442271. The next prime is 8442299. The reversal of 8442280 is 822448.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1710 + ... + 4450.

It is an arithmetic number, because the mean of its divisors is an integer number (370170).

Almost surely, 2^8442280 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 8442280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11845440).

8442280 is an abundant number, since it is smaller than the sum of its proper divisors (15248600).

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

8442280 is a wasteful number, since it uses less digits than its factorization.

8442280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2770 (or 2766 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 8442280 is about 2905.5601869519. The cubic root of 8442280 is about 203.6197581833.

The spelling of 8442280 in words is "eight million, four hundred forty-two thousand, two hundred eighty".