3007280721 has 4 divisors (see below), whose sum is σ = 4009707632. Its totient is φ = 2004853812.

The previous prime is 3007280711. The next prime is 3007280747. The reversal of 3007280721 is 1270827003.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3007280721 - 2⁷ = 3007280593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3007280711) 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 3 ways as a sum of consecutive naturals, for example, 501213451 + ... + 501213456.

It is an arithmetic number, because the mean of its divisors is an integer number (1002426908).

Almost surely, 2^3007280721 is an apocalyptic number.

It is an amenable number.

3007280721 is a deficient number, since it is larger than the sum of its proper divisors (1002426911).

3007280721 is a wasteful number, since it uses less digits than its factorization.

3007280721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1002426910.

The product of its (nonzero) digits is 4704, while the sum is 30.

The square root of 3007280721 is about 54838.6790595835. The cubic root of 3007280721 is about 1443.4153629180.

The spelling of 3007280721 in words is "three billion, seven million, two hundred eighty thousand, seven hundred twenty-one".