8304940 has 48 divisors (see below), whose sum is σ = 20123712. Its totient is φ = 2820096.

The previous prime is 8304937. The next prime is 8304943. The reversal of 8304940 is 494038.

It is an interprime number because it is at equal distance from previous prime (8304937) and next prime (8304943).

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

It is a junction number, because it is equal to n+sod(n) for n = 8304899 and 8304908.

It is not an unprimeable number, because it can be changed into a prime (8304943) 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, 18964 + ... + 19396.

It is an arithmetic number, because the mean of its divisors is an integer number (419244).

Almost surely, 2^8304940 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 8304940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10061856).

8304940 is an abundant number, since it is smaller than the sum of its proper divisors (11818772).

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

8304940 is a wasteful number, since it uses less digits than its factorization.

8304940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 584 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 8304940 is about 2881.8292801622. The cubic root of 8304940 is about 202.5095458590.

Adding to 8304940 its reverse (494038), we get a palindrome (8798978).

The spelling of 8304940 in words is "eight million, three hundred four thousand, nine hundred forty".