8308040 has 48 divisors (see below), whose sum is σ = 20258100. Its totient is φ = 3065088.

The previous prime is 8308033. The next prime is 8308043. The reversal of 8308040 is 408038.

It can be written as a sum of positive squares in 6 ways, for example, as 3118756 + 5189284 = 1766^2 + 2278^2 .

It is a junction number, because it is equal to n+sod(n) for n = 8307997 and 8308015.

It is not an unprimeable number, because it can be changed into a prime (8308043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6146 + ... + 7374.

Almost surely, 2^8308040 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 8308040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10129050).

8308040 is an abundant number, since it is smaller than the sum of its proper divisors (11950060).

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

8308040 is a wasteful number, since it uses less digits than its factorization.

8308040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266 (or 1249 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 8308040 is about 2882.3670827984. The cubic root of 8308040 is about 202.5347397596.

The spelling of 8308040 in words is "eight million, three hundred eight thousand, forty".