8305240 has 32 divisors (see below), whose sum is σ = 18769680. Its totient is φ = 3307392.

The previous prime is 8305217. The next prime is 8305243. The reversal of 8305240 is 425038.

It is a super-2 number, since 2×8305240² = 137954022915200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8305243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15619 + ... + 16141.

Almost surely, 2^8305240 is an apocalyptic number.

It is an amenable number.

8305240 is an abundant number, since it is smaller than the sum of its proper divisors (10464440).

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

8305240 is a wasteful number, since it uses less digits than its factorization.

8305240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 927 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 8305240 is about 2881.8813299649. The cubic root of 8305240 is about 202.5119842524.

The spelling of 8305240 in words is "eight million, three hundred five thousand, two hundred forty".