8320390 has 32 divisors (see below), whose sum is σ = 16692480. Its totient is φ = 2964864.

The previous prime is 8320387. The next prime is 8320393. The reversal of 8320390 is 930238.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (8320387) and next prime (8320393).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8320393) 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, 2667 + ... + 4873.

It is an arithmetic number, because the mean of its divisors is an integer number (521640).

Almost surely, 2^8320390 is an apocalyptic number.

8320390 is an abundant number, since it is smaller than the sum of its proper divisors (8372090).

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

8320390 is a wasteful number, since it uses less digits than its factorization.

8320390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2256.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 8320390 is about 2884.5086236654. The cubic root of 8320390 is about 202.6350468377.

The spelling of 8320390 in words is "eight million, three hundred twenty thousand, three hundred ninety".