8298440 has 64 divisors (see below), whose sum is σ = 20088000. Its totient is φ = 3075840.

The previous prime is 8298427. The next prime is 8298443. The reversal of 8298440 is 448928.

It is a self number, because there is not a number n which added to its sum of digits gives 8298440.

It is not an unprimeable number, because it can be changed into a prime (8298443) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46271 + ... + 46449.

It is an arithmetic number, because the mean of its divisors is an integer number (313875).

Almost surely, 2^8298440 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 8298440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10044000).

8298440 is an abundant number, since it is smaller than the sum of its proper divisors (11789560).

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

8298440 is a wasteful number, since it uses less digits than its factorization.

8298440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270 (or 266 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 8298440 is about 2880.7013035023. The cubic root of 8298440 is about 202.4566995768.

The spelling of 8298440 in words is "eight million, two hundred ninety-eight thousand, four hundred forty".