8320340 has 48 divisors (see below), whose sum is σ = 20197632. Its totient is φ = 2820096.

The previous prime is 8320313. The next prime is 8320373. The reversal of 8320340 is 430238.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 14132 + ... + 14708.

It is an arithmetic number, because the mean of its divisors is an integer number (420784).

Almost surely, 2^8320340 is an apocalyptic number.

It is a pronic number, being equal to 2884×2885.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8320340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10098816).

8320340 is an abundant number, since it is smaller than the sum of its proper divisors (11877292).

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

8320340 is a wasteful number, since it uses less digits than its factorization.

8320340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696 (or 694 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 8320340 is about 2884.4999566649. The cubic root of 8320340 is about 202.6346409364.

Adding to 8320340 its reverse (430238), we get a palindrome (8750578).

The spelling of 8320340 in words is "eight million, three hundred twenty thousand, three hundred forty".