8820272721 has 8 divisors (see below), whose sum is σ = 12665007040. Its totient is φ = 5427860112.

The previous prime is 8820272693. The next prime is 8820272753. The reversal of 8820272721 is 1272720288.

8820272721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 8820272721 - 2¹³ = 8820264529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 226160839 = 8820272721 / (8 + 8 + 2 + 0 + 2 + 7 + 2 + 7 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8820272721.

It is not an unprimeable number, because it can be changed into a prime (8820272771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113080381 + ... + 113080458.

It is an arithmetic number, because the mean of its divisors is an integer number (1583125880).

Almost surely, 2^8820272721 is an apocalyptic number.

It is an amenable number.

8820272721 is a deficient number, since it is larger than the sum of its proper divisors (3844734319).

8820272721 is a wasteful number, since it uses less digits than its factorization.

8820272721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226160855.

The product of its (nonzero) digits is 50176, while the sum is 39.

The square root of 8820272721 is about 93916.3070025648. The cubic root of 8820272721 is about 2066.1444034311.

The spelling of 8820272721 in words is "eight billion, eight hundred twenty million, two hundred seventy-two thousand, seven hundred twenty-one".