8130240 has 112 divisors (see below), whose sum is σ = 28712160. Its totient is φ = 2165760.

The previous prime is 8130193. The next prime is 8130251. The reversal of 8130240 is 420318.

It is a happy number.

It is a super-2 number, since 2×8130240² = 132201604915200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 8170 + ... + 9110.

Almost surely, 2^8130240 is an apocalyptic number.

8130240 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8130240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14356080).

8130240 is an abundant number, since it is smaller than the sum of its proper divisors (20581920).

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

8130240 is a wasteful number, since it uses less digits than its factorization.

8130240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 967 (or 951 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 8130240 is about 2851.3575714035. The cubic root of 8130240 is about 201.0794962892.

Adding to 8130240 its reverse (420318), we get a palindrome (8550558).

The spelling of 8130240 in words is "eight million, one hundred thirty thousand, two hundred forty".