8282040721 has 8 divisors (see below), whose sum is σ = 8648236800. Its totient is φ = 7916353632.

The previous prime is 8282040667. The next prime is 8282040727. The reversal of 8282040721 is 1270402828.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8282040721 - 2¹¹ = 8282038673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8282040727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 93796 + ... + 159253.

It is an arithmetic number, because the mean of its divisors is an integer number (1081029600).

Almost surely, 2^8282040721 is an apocalyptic number.

It is an amenable number.

8282040721 is a deficient number, since it is larger than the sum of its proper divisors (366196079).

8282040721 is a wasteful number, since it uses less digits than its factorization.

8282040721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254495.

The product of its (nonzero) digits is 14336, while the sum is 34.

The square root of 8282040721 is about 91005.7180676028. The cubic root of 8282040721 is about 2023.2324745076.

The spelling of 8282040721 in words is "eight billion, two hundred eighty-two million, forty thousand, seven hundred twenty-one".