8130724 has 12 divisors (see below), whose sum is σ = 16261504. Its totient is φ = 3484584.

The previous prime is 8130721. The next prime is 8130737. The reversal of 8130724 is 4270318.

8130724 is an admirable number.

It is a super-2 number, since 2×8130724² = 132217345528352, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8130721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 145164 + ... + 145219.

Almost surely, 2^8130724 is an apocalyptic number.

It is an amenable number.

8130724 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

8130724 is a wasteful number, since it uses less digits than its factorization.

8130724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290394 (or 290392 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 8130724 is about 2851.4424419932. The cubic root of 8130724 is about 201.0834863537.

The spelling of 8130724 in words is "eight million, one hundred thirty thousand, seven hundred twenty-four".